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HDRI source is publisher tone mapped.","source_provenance_note":"Photographic source; perspective extraction and any crop are recorded separately.","path":"sources/photo/living_room_master.png","master_path":"sources/photo/living_room_master.png","master_dimensions":[1536,1536],"master_sha256":"f779e4b9c7715e43cb6e3fe93603219d57b7a8b1fa10d81b03a05ab4cddcdea1","sha256":"f779e4b9c7715e43cb6e3fe93603219d57b7a8b1fa10d81b03a05ab4cddcdea1","SHA":"f779e4b9c7715e43cb6e3fe93603219d57b7a8b1fa10d81b03a05ab4cddcdea1","transform":{"operation":"rectilinear perspective extraction","yaw_deg":180,"pitch_deg":-5,"horizontal_fov_deg":70,"vertical_fov_deg":70,"interpolation":"bilinear","nominal_horizontal_angular_samples":1592.889,"output_dimensions":[1536,1536],"resolution_note":"Angular sample count is a provenance estimate, not a claim of uniform planar source sampling; perspective sampling varies across the view."},"recommended_input_transform":{"operation":"isotropic Lanczos downsample of square master","output_dimensions":[512,512],"crop":null,"pad":null},"processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","provider":"Poly Haven","split_note":"Current sample review uses development sources; not a new held-out evaluation set.","input_path":"sources/inputs/photo_living_room.png","input_dimensions":[512,512],"input_sha256":"d47aab5db3217625c529cb6c30221fb71a5610a51888c62d8715a0f9c8df7ec7","input_transform":{"operation":"isotropic Lanczos downsample of square source master","source_dimensions":[1536,1536],"output_dimensions":[512,512],"crop":null,"pad":null,"stretch":false},"preview_path":"/samples/library/media/previews/photo_bg_046.webp"},{"id":"photo_bookshelf","category":"bookshelf","source_kind":"photographic_panorama","family":"photo","semantic_id":"bookshelf","label":"Bookshelf","asset_id":"christmas_photo_studio_01","source_group":"christmas_photo_studio_01","capture_group_status":"distinct named asset; no repeated views counted as independent captures","url":"https://polyhaven.com/a/christmas_photo_studio_01","source_url":"https://polyhaven.com/a/christmas_photo_studio_01","api_info_url":"https://api.polyhaven.com/info/christmas_photo_studio_01","api_files_url":"https://api.polyhaven.com/files/christmas_photo_studio_01","download_url":"https://dl.polyhaven.org/file/ph-assets/HDRIs/extra/Tonemapped%20JPG/christmas_photo_studio_01.jpg","license":"CC0","license_url":"https://polyhaven.com/license","author":{"Sergej Majboroda":"All"},"publisher_description":"Free 16K unclipped HDRI - warm, high-contrast indoor studio at night with strong overhead and Christmas tree lights, cozy festive mood and subtle cool fill.","source_path":"sources/photo/bookshelf_original.jpg","raw_path":"sources/photo/bookshelf_original.jpg","original_path":"sources/photo/bookshelf_original.jpg","source_dimensions":[8192,4096],"source_sha256":"c694c7d66e1ffc58d70acd5b04463201868c0d1634816bae225bc1d558e0b5b9","publisher_md5":"262714c2faf79569aae720505878f4fa","publisher_max_resolution":[16384,8192],"date_taken":1609265400,"backplate_id":null,"kind":"panorama","yaw_deg":15,"pitch_deg":-5,"reused_from":null,"split":"development","generated":false,"color_note":"Publisher RGB JPEG; digital values are not measured cd/m2. HDRI source is publisher tone mapped.","source_provenance_note":"Photographic source; perspective extraction and any crop are recorded separately.","path":"sources/photo/bookshelf_master.png","master_path":"sources/photo/bookshelf_master.png","master_dimensions":[1536,1536],"master_sha256":"334a52ab14c3b6527ff5c7080b7f438c466f5d8491d6da25ce8c7605d192c782","sha256":"334a52ab14c3b6527ff5c7080b7f438c466f5d8491d6da25ce8c7605d192c782","SHA":"334a52ab14c3b6527ff5c7080b7f438c466f5d8491d6da25ce8c7605d192c782","transform":{"operation":"rectilinear perspective extraction","yaw_deg":15,"pitch_deg":-5,"horizontal_fov_deg":70,"vertical_fov_deg":70,"interpolation":"bilinear","nominal_horizontal_angular_samples":1592.889,"output_dimensions":[1536,1536],"resolution_note":"Angular sample count is a provenance estimate, not a claim of uniform planar source sampling; perspective sampling varies across the view."},"recommended_input_transform":{"operation":"isotropic Lanczos downsample of square master","output_dimensions":[512,512],"crop":null,"pad":null},"processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","provider":"Poly Haven","split_note":"Current sample review uses development sources; not a new held-out evaluation set.","input_path":"sources/inputs/photo_bookshelf.png","input_dimensions":[512,512],"input_sha256":"9f44ff3cbca75c4430f68dc24f73da521a160a0d3ae131e50e0f2cff5dcbc318","input_transform":{"operation":"isotropic Lanczos downsample of square source master","source_dimensions":[1536,1536],"output_dimensions":[512,512],"crop":null,"pad":null,"stretch":false},"preview_path":"/samples/library/media/previews/photo_bg_048.webp"},{"id":"photo_tabletop","category":"tabletop","source_kind":"photographic_panorama","family":"photo","semantic_id":"tabletop","label":"Workshop table","asset_id":"carpentry_shop_02","source_group":"carpentry_shop_02","capture_group_status":"distinct named asset; no repeated views counted as independent captures","url":"https://polyhaven.com/a/carpentry_shop_02","source_url":"https://polyhaven.com/a/carpentry_shop_02","api_info_url":"https://api.polyhaven.com/info/carpentry_shop_02","api_files_url":"https://api.polyhaven.com/files/carpentry_shop_02","download_url":"https://dl.polyhaven.org/file/ph-assets/HDRIs/extra/Tonemapped%20JPG/carpentry_shop_02.jpg","license":"CC0","license_url":"https://polyhaven.com/license","author":{"Greg Zaal":"All"},"publisher_description":"Free 16K unclipped HDRI of a dusty carpentry shop with warm fluorescent ceiling lamps, high-contrast shadows, gritty yellowed tones and strong fill.","source_path":"sources/photo/tabletop_original.jpg","raw_path":"sources/photo/tabletop_original.jpg","original_path":"sources/photo/tabletop_original.jpg","source_dimensions":[8192,4096],"source_sha256":"2d25db59ac92da22cfb17bf7bcbb31adde21d1b75798ee970fd5ab060a9ff829","publisher_md5":"99815bf3304396bb61c7ccbbcb1a67da","publisher_max_resolution":[16384,8192],"date_taken":1554722640,"backplate_id":null,"kind":"panorama","yaw_deg":175,"pitch_deg":-25,"split":"development","generated":false,"color_note":"Publisher RGB JPEG; digital values are not measured cd/m2. HDRI source is publisher tone mapped.","source_provenance_note":"Photographic source; perspective extraction and any crop are recorded separately.","path":"sources/photo/tabletop_master.png","master_path":"sources/photo/tabletop_master.png","master_dimensions":[1536,1536],"master_sha256":"63f4bce49e5463443046e8e1bbfba21022d63bc3e1c6a1523b8399f7152d08ba","sha256":"63f4bce49e5463443046e8e1bbfba21022d63bc3e1c6a1523b8399f7152d08ba","SHA":"63f4bce49e5463443046e8e1bbfba21022d63bc3e1c6a1523b8399f7152d08ba","transform":{"operation":"rectilinear perspective extraction","yaw_deg":175,"pitch_deg":-25,"horizontal_fov_deg":70,"vertical_fov_deg":70,"interpolation":"bilinear","nominal_horizontal_angular_samples":1592.889,"output_dimensions":[1536,1536],"resolution_note":"Angular sample count is a provenance estimate, not a claim of uniform planar source sampling; perspective sampling varies across the view."},"recommended_input_transform":{"operation":"isotropic Lanczos downsample of square master","output_dimensions":[512,512],"crop":null,"pad":null},"processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","provider":"Poly Haven","split_note":"Current sample review uses development sources; not a new held-out evaluation set.","input_path":"sources/inputs/photo_tabletop.png","input_dimensions":[512,512],"input_sha256":"1dc3579279e3bbb6855268fab2603eee7fe81fb05119845dc88ea25c14b0a472","input_transform":{"operation":"isotropic Lanczos downsample of square source master","source_dimensions":[1536,1536],"output_dimensions":[512,512],"crop":null,"pad":null,"stretch":false},"preview_path":"/samples/library/media/previews/photo_bg_056.webp"},{"id":"gpt_bark","category":"bark","prompt":"Use case: photorealistic-natural. Create ONE high-resolution square full-color photograph-like image, ideally 2048 x 2048 pixels, for a visual perception stimulus source. A close, front-facing photograph of a broad mature tree trunk, rich brown bark with irregular deep vertical fissures and small green moss patches. One contiguous natural bark surface fills the frame, sharp detail across the image. Preserve realistic, distinguishable natural colors and moderate dynamic range. No typography, captions, watermark, collage, borders, diagrams, artificial stripe overlays, sinusoidal patterns, motion blur, spotlight bands, or grayscale conversion. This is an unprocessed still scene. Use text description only; no reference image.","requested_size":"2048x2048","method":"text-only built-in image_gen","model":"tool managed; exact model version not exposed","family":"gpt","semantic_id":"bark","label":"Bark","master_path":"sources/gpt/gpt_bark.png","raw_path":"sources/gpt/gpt_bark.png","source_dimensions":[1254,1254],"master_dimensions":[1254,1254],"transform":"Native tool output, no upscaling or reference image","sha256":"968e74f8dda3ea343195dd9aa535efce849311bbb4f9bc7671ad31127d03a063","source_group":"gpt_bark","url":null,"license":"AI-generated; not a photographic capture or CC0 dataset asset","provider":"OpenAI image_gen","split":"development","input_path":"sources/inputs/gpt_bark.png","input_dimensions":[512,512],"input_sha256":"fc9c4736978b2d172ae20856ba9da91d671ae845f912b7f5c9ecaeda24389637","input_transform":{"operation":"isotropic Lanczos downsample of square source master","source_dimensions":[1254,1254],"output_dimensions":[512,512],"crop":null,"pad":null,"stretch":false},"processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","preview_path":"/samples/t1/picker/a5e72950738c958def07.webp"},{"id":"gpt_grass","category":"grass","prompt":"Use case: photorealistic-natural. Create ONE high-resolution square full-color photograph-like image, ideally 2048 x 2048 pixels, for a visual perception stimulus source. A natural overhead photograph of a patch of green meadow grass with blades at irregular angles, a few small dried leaves and exposed soil. Broad clear focus, naturally irregular texture fills the frame. Preserve realistic, distinguishable natural colors and moderate dynamic range. No typography, captions, watermark, collage, borders, diagrams, artificial stripe overlays, sinusoidal patterns, motion blur, spotlight bands, or grayscale conversion. This is an unprocessed still scene. Use text description only; no reference image.","requested_size":"2048x2048","method":"text-only built-in image_gen","model":"tool managed; exact model version not exposed","family":"gpt","semantic_id":"grass","label":"Grass","master_path":"sources/gpt/gpt_grass.png","raw_path":"sources/gpt/gpt_grass.png","source_dimensions":[1254,1254],"master_dimensions":[1254,1254],"transform":"Native tool output, no upscaling or reference image","sha256":"a86d9d21f5a4978c305e6c9431ebae025b10c80fa5fe658fee7d6447e872505c","source_group":"gpt_grass","url":null,"license":"AI-generated; not a photographic capture or CC0 dataset asset","provider":"OpenAI image_gen","split":"development","input_path":"sources/inputs/gpt_grass.png","input_dimensions":[512,512],"input_sha256":"ecd680b7b716f5a29bc86bd21d936c2e45d590cb4a6bfb462b831b921f399136","input_transform":{"operation":"isotropic Lanczos downsample of square source master","source_dimensions":[1254,1254],"output_dimensions":[512,512],"crop":null,"pad":null,"stretch":false},"processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","preview_path":"/samples/t1/picker/979029427510cfd2b39d.webp"},{"id":"gpt_sand","category":"sand","prompt":"Use case: photorealistic-natural. Create ONE high-resolution square full-color photograph-like image, ideally 2048 x 2048 pixels, for a visual perception stimulus source. An overhead photograph of a natural patch of beige sand and irregular small grey and brown pebbles, with subtle surface relief and sparse small dried plant fragments. Sharp recognizable granular texture throughout. Preserve realistic, distinguishable natural colors and moderate dynamic range. No typography, captions, watermark, collage, borders, diagrams, artificial stripe overlays, sinusoidal patterns, motion blur, spotlight bands, or grayscale conversion. This is an unprocessed still scene. Use text description only; no reference image.","requested_size":"2048x2048","method":"text-only built-in image_gen","model":"tool managed; exact model version not exposed","family":"gpt","semantic_id":"sand","label":"Sand","master_path":"sources/gpt/gpt_sand.png","raw_path":"sources/gpt/gpt_sand.png","source_dimensions":[1254,1254],"master_dimensions":[1254,1254],"transform":"Native tool output, no upscaling or reference image","sha256":"c6f50d63e853fdd9b5c619fcd65955180657010c9a34a6d0429bd4265440d312","source_group":"gpt_sand","url":null,"license":"AI-generated; not a photographic capture or CC0 dataset asset","provider":"OpenAI image_gen","split":"development","input_path":"sources/inputs/gpt_sand.png","input_dimensions":[512,512],"input_sha256":"a58208ffa7c25dc6caa545a36118733c82abc9073f3a3c189793d9fef5b7b838","input_transform":{"operation":"isotropic Lanczos downsample of square source master","source_dimensions":[1254,1254],"output_dimensions":[512,512],"crop":null,"pad":null,"stretch":false},"processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","preview_path":"/samples/t1/picker/80a60229b47528d0fdba.webp"},{"id":"gpt_forest","category":"forest","prompt":"Use case: photorealistic-natural. Create ONE high-resolution square full-color photograph-like image, ideally 2048 x 2048 pixels, for a visual perception stimulus source. An ordinary eye-level photograph of a green forest slope, complete tree trunks among ferns, mossy rocks and leaf litter, with deeper trees receding into the scene. Broad depth of field and soft natural daylight. Preserve realistic, distinguishable natural colors and moderate dynamic range. No typography, captions, watermark, collage, borders, diagrams, artificial stripe overlays, sinusoidal patterns, motion blur, spotlight bands, or grayscale conversion. This is an unprocessed still scene. Use text description only; no reference image.","requested_size":"2048x2048","method":"text-only built-in image_gen","model":"tool managed; exact model version not exposed","family":"gpt","semantic_id":"forest","label":"Forest","master_path":"sources/gpt/gpt_forest.png","raw_path":"sources/gpt/gpt_forest.png","source_dimensions":[1254,1254],"master_dimensions":[1254,1254],"transform":"Native tool output, no upscaling or reference image","sha256":"60db391a056137fad8a83ea146a8ddee71e1ba4e4bfc76cc3dcb37f6a12c7a1a","source_group":"gpt_forest","url":null,"license":"AI-generated; not a photographic capture or CC0 dataset asset","provider":"OpenAI image_gen","split":"development","input_path":"sources/inputs/gpt_forest.png","input_dimensions":[512,512],"input_sha256":"adf19d53b0bcca293dcfceb64e7c07ca7ecd2c87c32a7fe8a06c8c1417c27b63","input_transform":{"operation":"isotropic Lanczos downsample of square source master","source_dimensions":[1254,1254],"output_dimensions":[512,512],"crop":null,"pad":null,"stretch":false},"processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","preview_path":"/samples/t1/picker/35799642a42f6426d264.webp"},{"id":"gpt_meadow","category":"meadow","prompt":"Use case: photorealistic-natural. Create ONE high-resolution square full-color photograph-like image, ideally 2048 x 2048 pixels, for a visual perception stimulus source. An ordinary eye-level landscape photograph of an open grassy meadow, a distant line of leafy trees and a lightly clouded blue sky. Clear foreground grass and natural depth, midday daylight. Preserve realistic, distinguishable natural colors and moderate dynamic range. No typography, captions, watermark, collage, borders, diagrams, artificial stripe overlays, sinusoidal patterns, motion blur, spotlight bands, or grayscale conversion. This is an unprocessed still scene. Use text description only; no reference image.","requested_size":"2048x2048","method":"text-only built-in image_gen","model":"tool managed; exact model version not exposed","family":"gpt","semantic_id":"meadow","label":"Meadow","master_path":"sources/gpt/gpt_meadow.png","raw_path":"sources/gpt/gpt_meadow.png","source_dimensions":[1254,1254],"master_dimensions":[1254,1254],"transform":"Native tool output, no upscaling or reference image","sha256":"b695d4f50c1318ff01341450cd14a887a5f664f70ab71948568319621c33ba51","source_group":"gpt_meadow","url":null,"license":"AI-generated; not a photographic capture or CC0 dataset asset","provider":"OpenAI image_gen","split":"development","input_path":"sources/inputs/gpt_meadow.png","input_dimensions":[512,512],"input_sha256":"607a070c90f7f8ba2f00d8e68dd083bdd6fd67521807a8e8be3b21b6e10441dc","input_transform":{"operation":"isotropic Lanczos downsample of square source master","source_dimensions":[1254,1254],"output_dimensions":[512,512],"crop":null,"pad":null,"stretch":false},"processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","preview_path":"/samples/t1/picker/d82d875bf9337270ecbc.webp"},{"id":"gpt_coast","category":"coast","prompt":"Use case: photorealistic-natural. Create ONE high-resolution square full-color photograph-like image, ideally 2048 x 2048 pixels, for a visual perception stimulus source. An ordinary eye-level landscape photograph of a rocky coast with irregular grey rocks, clear blue-green water and a distant shoreline under a lightly clouded sky. Still photograph, crisp surfaces, broad depth of field. Preserve realistic, distinguishable natural colors and moderate dynamic range. No typography, captions, watermark, collage, borders, diagrams, artificial stripe overlays, sinusoidal patterns, motion blur, spotlight bands, or grayscale conversion. This is an unprocessed still scene. Use text description only; no reference image.","requested_size":"2048x2048","method":"text-only built-in image_gen","model":"tool managed; exact model version not exposed","family":"gpt","semantic_id":"coast","label":"Coast","master_path":"sources/gpt/gpt_coast.png","raw_path":"sources/gpt/gpt_coast.png","source_dimensions":[1254,1254],"master_dimensions":[1254,1254],"transform":"Native tool output, no upscaling or reference image","sha256":"87f3270bb356ce0671ce398fc028255313d6bb1a7077da8b93c91e30e2a828e2","source_group":"gpt_coast","url":null,"license":"AI-generated; not a photographic capture or CC0 dataset asset","provider":"OpenAI image_gen","split":"development","input_path":"sources/inputs/gpt_coast.png","input_dimensions":[512,512],"input_sha256":"f427aa59635294fc5dc9b372f42ed78cd0568589da7bc1dd638d7ed6d27ae8b1","input_transform":{"operation":"isotropic Lanczos downsample of square source master","source_dimensions":[1254,1254],"output_dimensions":[512,512],"crop":null,"pad":null,"stretch":false},"processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","preview_path":"/samples/t1/picker/9880f53269fffb8771f0.webp"},{"id":"gpt_street","category":"street","prompt":"Use case: photorealistic-natural. Create ONE high-resolution square full-color photograph-like image, ideally 2048 x 2048 pixels, for a visual perception stimulus source. An ordinary eye-level photograph of a quiet urban residential street with a sidewalk, low-rise brick and plaster buildings, leafy trees and one parked car. Natural daylight, realistic perspective, no prominent signs or legible text. Preserve realistic, distinguishable natural colors and moderate dynamic range. No typography, captions, watermark, collage, borders, diagrams, artificial stripe overlays, sinusoidal patterns, motion blur, spotlight bands, or grayscale conversion. This is an unprocessed still scene. Use text description only; no reference image.","requested_size":"2048x2048","method":"text-only built-in image_gen","model":"tool managed; exact model version not exposed","family":"gpt","semantic_id":"street","label":"Street","master_path":"sources/gpt/gpt_street.png","raw_path":"sources/gpt/gpt_street.png","source_dimensions":[1254,1254],"master_dimensions":[1254,1254],"transform":"Native tool output, no upscaling or reference image","sha256":"8f467056a23d666d052a36acd114e67507a25def5ec646a270fe4b86590bc124","source_group":"gpt_street","url":null,"license":"AI-generated; not a photographic capture or CC0 dataset asset","provider":"OpenAI image_gen","split":"development","input_path":"sources/inputs/gpt_street.png","input_dimensions":[512,512],"input_sha256":"fd24e118f6da02b64c395840ec2373353e2df5655d07e8ac0249a6ad4f4298c0","input_transform":{"operation":"isotropic Lanczos downsample of square source master","source_dimensions":[1254,1254],"output_dimensions":[512,512],"crop":null,"pad":null,"stretch":false},"processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","preview_path":"/samples/t1/picker/ea55213eab4327e522ec.webp"},{"id":"gpt_living_room","category":"living_room","prompt":"Use case: photorealistic-natural. Create ONE high-resolution square full-color photograph-like image, ideally 2048 x 2048 pixels, for a visual perception stimulus source. An ordinary eye-level wide photograph of a lived-in living room with a complete muted blue sofa, wooden coffee table, bookcase, houseplant and a window. Soft even daylight, neutral walls, realistic perspective, broad depth of field. Preserve realistic, distinguishable natural colors and moderate dynamic range. No typography, captions, watermark, collage, borders, diagrams, artificial stripe overlays, sinusoidal patterns, motion blur, spotlight bands, or grayscale conversion. This is an unprocessed still scene. Use text description only; no reference image.","requested_size":"2048x2048","method":"text-only built-in image_gen","model":"tool managed; exact model version not exposed","family":"gpt","semantic_id":"living_room","label":"Living Room","master_path":"sources/gpt/gpt_living_room.png","raw_path":"sources/gpt/gpt_living_room.png","source_dimensions":[1254,1254],"master_dimensions":[1254,1254],"transform":"Native tool output, no upscaling or reference image","sha256":"16a058ec15b08dff79486f486b09ed5018d2fe332e986320c6c22bd8a3ed9bfc","source_group":"gpt_living_room","url":null,"license":"AI-generated; not a photographic capture or CC0 dataset asset","provider":"OpenAI image_gen","split":"development","input_path":"sources/inputs/gpt_living_room.png","input_dimensions":[512,512],"input_sha256":"1578ba1ef0fcaa767eea19d3d9c0594cb50dc333935f7f3ca69fbb0a75bc9b87","input_transform":{"operation":"isotropic Lanczos downsample of square source master","source_dimensions":[1254,1254],"output_dimensions":[512,512],"crop":null,"pad":null,"stretch":false},"processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","preview_path":"/samples/t1/picker/783e1e1e27a21d1e7ec4.webp"},{"id":"gpt_bookshelf","category":"bookshelf","prompt":"Use case: photorealistic-natural. Create ONE high-resolution square full-color photograph-like image, ideally 2048 x 2048 pixels, for a visual perception stimulus source. A front-facing photograph of a home wooden bookshelf with a variety of colored book spines, a ceramic bowl and a small green plant. Complete shelves visible, varied irregular arrangements, soft daylight, no prominent legible words. Preserve realistic, distinguishable natural colors and moderate dynamic range. No typography, captions, watermark, collage, borders, diagrams, artificial stripe overlays, sinusoidal patterns, motion blur, spotlight bands, or grayscale conversion. This is an unprocessed still scene. 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Create ONE new high-quality full-color documentary photograph. Scene: An ordinary real-world birch grove shown as a complete recognizable environment. Include context and ordinary details specific to this place, with a modest clear foreground floor, ground, or work surface for later controlled object placement; do not let a blank surface dominate the entire scene. Landscape 1536x1024 framing, believable camera perspective, deep focus and detailed natural materials. Lighting: late afternoon sunlight with moderate shadows. Rich but realistic varied colors, natural irregular arrangement and asymmetrical composition. Realistic everyday setting, neither luxury showroom nor cinematic fantasy. No people, no text, logos or watermarks; no collage, multiple panels, mirroring, artificial bilateral symmetry, extreme bokeh, or painted/CG appearance. Preserve enough realistic environmental context. Text-only new generation, no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T03:49:06.629Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_003.png","dimensions":[1536,1024],"sha256":"d164748b5cf0b09825942694cefa7d2fcfff28cfa2d94aae4fbdb7191b8dd02b","generation_id":"exec-fa5a29d4-dde4-41b7-89f3-da1b542308eb","accepted":true,"source_group":"exec-fa5a29d4-dde4-41b7-89f3-da1b542308eb","photo_match":"photo_birchwood","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_003","legacy_id":"bg_003","label":"birch grove","name":"birch grove","path":"generated_backgrounds/bg_003.png","raw_path":"sources/library/generated_backgrounds/bg_003.png","kind":"background","pair_id":"bg_003","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_003.webp","library_id":"gpt_bg_003","scene_family":"woodland","semantic_id":"bg_003","master_path":"sources/library/generated_backgrounds/bg_003.png","master_dimensions":[1536,1024],"master_sha256":"d164748b5cf0b09825942694cefa7d2fcfff28cfa2d94aae4fbdb7191b8dd02b","original_path":"sources/library/generated_backgrounds/bg_003.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_003","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_003.png","input_dimensions":[512,512],"input_sha256":"2f184dc003f20eb75588f1cb009a9cfc14f6c08d16e3941b452401984aab4b9d","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_004","family":"gpt","concept":"bamboo grove","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph. Scene: An ordinary real-world bamboo grove shown as a complete recognizable environment. Include context and ordinary details specific to this place, with a modest clear foreground floor, ground, or work surface for later controlled object placement; do not let a blank surface dominate the entire scene. Landscape 1536x1024 framing, believable camera perspective, deep focus and detailed natural materials. Lighting: natural window light balanced with room illumination. Rich but realistic varied colors, natural irregular arrangement and asymmetrical composition. Realistic everyday setting, neither luxury showroom nor cinematic fantasy. No people, no text, logos or watermarks; no collage, multiple panels, mirroring, artificial bilateral symmetry, extreme bokeh, or painted/CG appearance. Preserve enough realistic environmental context. Text-only new generation, no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T03:49:06.717Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_004.png","dimensions":[1536,1024],"sha256":"14a59862f43600470510e0e1df50528b96fd3b2346e55acf989c00cb66059393","generation_id":"exec-5e632c02-6791-459b-a152-601c1248523b","accepted":true,"source_group":"exec-5e632c02-6791-459b-a152-601c1248523b","photo_match":"photo_bamboo_tunnel","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_004","legacy_id":"bg_004","label":"bamboo grove","name":"bamboo grove","path":"generated_backgrounds/bg_004.png","raw_path":"sources/library/generated_backgrounds/bg_004.png","kind":"background","pair_id":"bg_004","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_004.webp","library_id":"gpt_bg_004","scene_family":"woodland","semantic_id":"bg_004","master_path":"sources/library/generated_backgrounds/bg_004.png","master_dimensions":[1536,1024],"master_sha256":"14a59862f43600470510e0e1df50528b96fd3b2346e55acf989c00cb66059393","original_path":"sources/library/generated_backgrounds/bg_004.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_004","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_004.png","input_dimensions":[512,512],"input_sha256":"b3bdaf4b6c54161ca16a8855bc1a03bfc25277fdc9598458e76255b2032460d1","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_005","family":"gpt","concept":"tropical rainforest path","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph. Scene: An ordinary real-world tropical rainforest path shown as a complete recognizable environment. Include context and ordinary details specific to this place, with a modest clear foreground floor, ground, or work surface for later controlled object placement; do not let a blank surface dominate the entire scene. Landscape 1536x1024 framing, believable camera perspective, deep focus and detailed natural materials. Lighting: soft overcast daylight. Rich but realistic varied colors, natural irregular arrangement and asymmetrical composition. Realistic everyday setting, neither luxury showroom nor cinematic fantasy. No people, no text, logos or watermarks; no collage, multiple panels, mirroring, artificial bilateral symmetry, extreme bokeh, or painted/CG appearance. Preserve enough realistic environmental context. Text-only new generation, no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T03:49:06.798Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_005.png","dimensions":[1536,1024],"sha256":"5bba60c20eda1671f295f1ff64baf5bcf9449b978acfae366835e98f1d645a40","generation_id":"exec-be3846c6-5c92-4253-95cc-46fdda5df451","accepted":true,"source_group":"exec-be3846c6-5c92-4253-95cc-46fdda5df451","photo_match":"photo_rainforest_trail","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_005","legacy_id":"bg_005","label":"tropical rainforest path","name":"tropical rainforest path","path":"generated_backgrounds/bg_005.png","raw_path":"sources/library/generated_backgrounds/bg_005.png","kind":"background","pair_id":"bg_005","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_005.webp","library_id":"gpt_bg_005","scene_family":"woodland","semantic_id":"bg_005","master_path":"sources/library/generated_backgrounds/bg_005.png","master_dimensions":[1536,1024],"master_sha256":"5bba60c20eda1671f295f1ff64baf5bcf9449b978acfae366835e98f1d645a40","original_path":"sources/library/generated_backgrounds/bg_005.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_005","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_005.png","input_dimensions":[512,512],"input_sha256":"6da05cb515321a0ff63ce017cf2e80c99e04f2562835d83a4e28e705c52aafe7","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_008","family":"gpt","concept":"dry savanna grass","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph. Scene: An ordinary real-world dry savanna grass shown as a complete recognizable environment. Include context and ordinary details specific to this place, with a modest clear foreground floor, ground, or work surface for later controlled object placement; do not let a blank surface dominate the entire scene. Landscape 1536x1024 framing, believable camera perspective, deep focus and detailed natural materials. Lighting: late afternoon sunlight with moderate shadows. Rich but realistic varied colors, natural irregular arrangement and asymmetrical composition. Realistic everyday setting, neither luxury showroom nor cinematic fantasy. No people, no text, logos or watermarks; no collage, multiple panels, mirroring, artificial bilateral symmetry, extreme bokeh, or painted/CG appearance. Preserve enough realistic environmental context. Text-only new generation, no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T03:52:19.905Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_008.png","dimensions":[1536,1024],"sha256":"cd4169a836897494358fc9b5c916d213b348165c11984e6d9c7dfeeca51e7037","generation_id":"exec-36d250ae-b5d3-4397-8bf9-2bf1db2a73dd","accepted":true,"source_group":"exec-36d250ae-b5d3-4397-8bf9-2bf1db2a73dd","photo_match":"photo_autumn_hilly_field","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_008","legacy_id":"bg_008","label":"dry savanna grass","name":"dry savanna grass","path":"generated_backgrounds/bg_008.png","raw_path":"sources/library/generated_backgrounds/bg_008.png","kind":"background","pair_id":"bg_008","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_008.webp","library_id":"gpt_bg_008","scene_family":"grass","semantic_id":"bg_008","master_path":"sources/library/generated_backgrounds/bg_008.png","master_dimensions":[1536,1024],"master_sha256":"cd4169a836897494358fc9b5c916d213b348165c11984e6d9c7dfeeca51e7037","original_path":"sources/library/generated_backgrounds/bg_008.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_008","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_008.png","input_dimensions":[512,512],"input_sha256":"b330867a6928228a552efcf6b9e216b76091fe54288746c85c653df96bd3dfa8","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_009","family":"gpt","concept":"sports field grass","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph. Scene: An ordinary real-world sports field grass shown as a complete recognizable environment. Include context and ordinary details specific to this place, with a modest clear foreground floor, ground, or work surface for later controlled object placement; do not let a blank surface dominate the entire scene. Landscape 1536x1024 framing, believable camera perspective, deep focus and detailed natural materials. Lighting: natural window light balanced with room illumination. Rich but realistic varied colors, natural irregular arrangement and asymmetrical composition. Realistic everyday setting, neither luxury showroom nor cinematic fantasy. No people, no text, logos or watermarks; no collage, multiple panels, mirroring, artificial bilateral symmetry, extreme bokeh, or painted/CG appearance. Preserve enough realistic environmental context. Text-only new generation, no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T03:52:19.987Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_009.png","dimensions":[1536,1024],"sha256":"4887d828ac510bde971705c00241b76420ff6c7f3a01aa804409940de3d23e3a","generation_id":"exec-44ac7a58-d6ac-4f53-8c90-a4fbaf403af3","accepted":true,"source_group":"exec-44ac7a58-d6ac-4f53-8c90-a4fbaf403af3","photo_match":"photo_orlando_stadium","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_009","legacy_id":"bg_009","label":"sports field grass","name":"sports field grass","path":"generated_backgrounds/bg_009.png","raw_path":"sources/library/generated_backgrounds/bg_009.png","kind":"background","pair_id":"bg_009","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_009.webp","library_id":"gpt_bg_009","scene_family":"grass","semantic_id":"bg_009","master_path":"sources/library/generated_backgrounds/bg_009.png","master_dimensions":[1536,1024],"master_sha256":"4887d828ac510bde971705c00241b76420ff6c7f3a01aa804409940de3d23e3a","original_path":"sources/library/generated_backgrounds/bg_009.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_009","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_009.png","input_dimensions":[512,512],"input_sha256":"1bc28aa426e596cb3245ee38d9312cf69e2721a2060a355c90b7fb174533e4c5","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_010","family":"gpt","concept":"overgrown garden lawn","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph. Scene: An ordinary real-world overgrown garden lawn shown as a complete recognizable environment. Include context and ordinary details specific to this place, with a modest clear foreground floor, ground, or work surface for later controlled object placement; do not let a blank surface dominate the entire scene. Landscape 1536x1024 framing, believable camera perspective, deep focus and detailed natural materials. Lighting: soft overcast daylight. Rich but realistic varied colors, natural irregular arrangement and asymmetrical composition. Realistic everyday setting, neither luxury showroom nor cinematic fantasy. No people, no text, logos or watermarks; no collage, multiple panels, mirroring, artificial bilateral symmetry, extreme bokeh, or painted/CG appearance. Preserve enough realistic environmental context. Text-only new generation, no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T03:52:20.067Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_010.png","dimensions":[1536,1024],"sha256":"a6308cc5836f66f241981265e0013fe60a7b7f3a5390d0703bc5285e9943ee6e","generation_id":"exec-ee319081-f006-4f6e-a229-d5b5c4718819","accepted":true,"source_group":"exec-ee319081-f006-4f6e-a229-d5b5c4718819","photo_match":"photo_suburban_garden","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_010","legacy_id":"bg_010","label":"overgrown garden lawn","name":"overgrown garden lawn","path":"generated_backgrounds/bg_010.png","raw_path":"sources/library/generated_backgrounds/bg_010.png","kind":"background","pair_id":"bg_010","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_010.webp","library_id":"gpt_bg_010","scene_family":"grass","semantic_id":"bg_010","master_path":"sources/library/generated_backgrounds/bg_010.png","master_dimensions":[1536,1024],"master_sha256":"a6308cc5836f66f241981265e0013fe60a7b7f3a5390d0703bc5285e9943ee6e","original_path":"sources/library/generated_backgrounds/bg_010.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_010","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_010.png","input_dimensions":[512,512],"input_sha256":"e25c1ab65a0edba10bf2450960310e05141b76efa760f153e5c89ba74df84cd5","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_011","family":"gpt","concept":"Cowboy Town Hall","photo_match":"photo_cowboy_town_hall","photo_candidate_index":4,"photo_scene_description":"Unclipped, free 20K HDRI of a rustic cowboy hall: warm LED bulbs, corrugated roof, wood benches, soft shadows, cool daylight, and bright entrances.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph of an ordinary real environment. Semantic scene reference in words: Unclipped, free 20K HDRI of a rustic cowboy hall: warm LED bulbs, corrugated roof, wood benches, soft shadows, cool daylight, and bright entrances.. Use the environmental content and lighting described, ignoring publisher language such as free, HDRI, unclipped, resolution, or panoramic. Generate an independent ordinary rectilinear camera view of this kind of environment, NOT an HDRI, NOT 360 degrees or fisheye. Landscape 1536x1024 framing, realistic camera perspective, deep focus and natural materials. Keep the scene recognizable with plausible details specific to this environment. Include a modest clear foreground floor, ground or work surface for later controlled target placement, without letting an empty surface dominate the whole scene. Full realistic color, natural irregular arrangements and asymmetrical composition. No people, no text or logos, no watermark, no panels, no collage, no mirroring, no spherical projection or studio spheres, no extreme bokeh, no painted/CG appearance. Text-only new generation; no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T03:56:06.324Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_011.png","dimensions":[1536,1024],"sha256":"283a01a9fc062ba76147625e77be8ca932f579cd004de6573f5d8bef68e40738","generation_id":"exec-6dc29a82-83af-4b52-803d-d72e5667221d","accepted":true,"source_group":"exec-6dc29a82-83af-4b52-803d-d72e5667221d","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_011","legacy_id":"bg_011","label":"Cowboy Town Hall","name":"Cowboy Town Hall","path":"generated_backgrounds/bg_011.png","raw_path":"sources/library/generated_backgrounds/bg_011.png","kind":"background","pair_id":"bg_011","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_011.webp","library_id":"gpt_bg_011","scene_family":"indoor","semantic_id":"bg_011","master_path":"sources/library/generated_backgrounds/bg_011.png","master_dimensions":[1536,1024],"master_sha256":"283a01a9fc062ba76147625e77be8ca932f579cd004de6573f5d8bef68e40738","original_path":"sources/library/generated_backgrounds/bg_011.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_011","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_011.png","input_dimensions":[512,512],"input_sha256":"708e2ff95b262fcd0e00c1400a74ff40123f1bee76b2437752bbfbcd4720b9cf","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_019","family":"gpt","concept":"Glasshouse Interior","photo_match":"photo_glasshouse_interior","photo_candidate_index":14,"photo_scene_description":"Free, unclipped 24k HDRI of a glasshouse interior with soft, low-contrast partly-cloudy light through large windows, panoramic vista and cozy mood.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph of an ordinary real environment. Semantic scene reference in words: Free, unclipped 24k HDRI of a glasshouse interior with soft, low-contrast partly-cloudy light through large windows, panoramic vista and cozy mood.. Use the environmental content and lighting described, ignoring publisher language such as free, HDRI, unclipped, resolution, or panoramic. Generate an independent ordinary rectilinear camera view of this kind of environment, NOT an HDRI, NOT 360 degrees or fisheye. Landscape 1536x1024 framing, realistic camera perspective, deep focus and natural materials. Keep the scene recognizable with plausible details specific to this environment. Include a modest clear foreground floor, ground or work surface for later controlled target placement, without letting an empty surface dominate the whole scene. Full realistic color, natural irregular arrangements and asymmetrical composition. No people, no text or logos, no watermark, no panels, no collage, no mirroring, no spherical projection or studio spheres, no extreme bokeh, no painted/CG appearance. Text-only new generation; no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T03:58:53.030Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_019.png","dimensions":[1536,1024],"sha256":"dd8c057005584a5c56268dd621f8a4413ea91442c87fc54f6d89dc66658ac2e5","generation_id":"exec-f8de758d-d6e6-4c92-bbc2-a99fc68b70d5","accepted":true,"source_group":"exec-f8de758d-d6e6-4c92-bbc2-a99fc68b70d5","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_019","legacy_id":"bg_019","label":"Glasshouse Interior","name":"Glasshouse Interior","path":"generated_backgrounds/bg_019.png","raw_path":"sources/library/generated_backgrounds/bg_019.png","kind":"background","pair_id":"bg_019","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_019.webp","library_id":"gpt_bg_019","scene_family":"indoor","semantic_id":"bg_019","master_path":"sources/library/generated_backgrounds/bg_019.png","master_dimensions":[1536,1024],"master_sha256":"dd8c057005584a5c56268dd621f8a4413ea91442c87fc54f6d89dc66658ac2e5","original_path":"sources/library/generated_backgrounds/bg_019.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_019","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_019.png","input_dimensions":[512,512],"input_sha256":"2335aa7154c45b9044a710af7413201605bcfe2514850ce2030bfba96e998922","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_020","family":"gpt","concept":"Church Meeting Room","photo_match":"photo_church_meeting_room","photo_candidate_index":15,"photo_scene_description":"Free 24k unclipped HDRI: church meeting room with warm, low-contrast natural morning/afternoon light through stained-glass windows, soft ambient wood tones.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph of an ordinary real environment. Semantic scene reference in words: Free 24k unclipped HDRI: church meeting room with warm, low-contrast natural morning/afternoon light through stained-glass windows, soft ambient wood tones.. Use the environmental content and lighting described, ignoring publisher language such as free, HDRI, unclipped, resolution, or panoramic. Generate an independent ordinary rectilinear camera view of this kind of environment, NOT an HDRI, NOT 360 degrees or fisheye. Landscape 1536x1024 framing, realistic camera perspective, deep focus and natural materials. Keep the scene recognizable with plausible details specific to this environment. Include a modest clear foreground floor, ground or work surface for later controlled target placement, without letting an empty surface dominate the whole scene. Full realistic color, natural irregular arrangements and asymmetrical composition. No people, no text or logos, no watermark, no panels, no collage, no mirroring, no spherical projection or studio spheres, no extreme bokeh, no painted/CG appearance. Text-only new generation; no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T03:58:53.113Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_020.png","dimensions":[1536,1024],"sha256":"cb4b64a74864ab1a1844a37b3a751690f6f73b740a5fc3f472a1a9bb8b5718f0","generation_id":"exec-d96775d4-fb09-45b3-a94c-a73e5b8e4ca4","accepted":true,"source_group":"exec-d96775d4-fb09-45b3-a94c-a73e5b8e4ca4","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_020","legacy_id":"bg_020","label":"Church Meeting Room","name":"Church Meeting Room","path":"generated_backgrounds/bg_020.png","raw_path":"sources/library/generated_backgrounds/bg_020.png","kind":"background","pair_id":"bg_020","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_020.webp","library_id":"gpt_bg_020","scene_family":"indoor","semantic_id":"bg_020","master_path":"sources/library/generated_backgrounds/bg_020.png","master_dimensions":[1536,1024],"master_sha256":"cb4b64a74864ab1a1844a37b3a751690f6f73b740a5fc3f472a1a9bb8b5718f0","original_path":"sources/library/generated_backgrounds/bg_020.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_020","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_020.png","input_dimensions":[512,512],"input_sha256":"5df0d34df45cedb2b1c7780720f51b1201eed2569ad36528590d2d1b53a3d040","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_021","family":"gpt","concept":"Crossfit Gym","photo_match":"photo_crossfit_gym","photo_candidate_index":18,"photo_scene_description":"Free 20k unclipped HDRI of a CrossFit gym with cool fluorescent indoor lighting, medium contrast, blue rubber floor and metal-roof.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph of an ordinary real environment. Semantic scene reference in words: Free 20k unclipped HDRI of a CrossFit gym with cool fluorescent indoor lighting, medium contrast, blue rubber floor and metal-roof.. Use the environmental content and lighting described, ignoring publisher language such as free, HDRI, unclipped, resolution, or panoramic. Generate an independent ordinary rectilinear camera view of this kind of environment, NOT an HDRI, NOT 360 degrees or fisheye. Landscape 1536x1024 framing, realistic camera perspective, deep focus and natural materials. Keep the scene recognizable with plausible details specific to this environment. Include a modest clear foreground floor, ground or work surface for later controlled target placement, without letting an empty surface dominate the whole scene. Full realistic color, natural irregular arrangements and asymmetrical composition. No people, no text or logos, no watermark, no panels, no collage, no mirroring, no spherical projection or studio spheres, no extreme bokeh, no painted/CG appearance. Text-only new generation; no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T04:01:39.952Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_021.png","dimensions":[1536,1024],"sha256":"f52e9f7c03e924454d8e04474526059269eea3309f609370eb2775069eeca0bc","generation_id":"exec-05fd0794-17c8-4f9a-a74e-fa4dd8094bd6","accepted":true,"source_group":"exec-05fd0794-17c8-4f9a-a74e-fa4dd8094bd6","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_021","legacy_id":"bg_021","label":"Crossfit Gym","name":"Crossfit Gym","path":"generated_backgrounds/bg_021.png","raw_path":"sources/library/generated_backgrounds/bg_021.png","kind":"background","pair_id":"bg_021","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_021.webp","library_id":"gpt_bg_021","scene_family":"indoor","semantic_id":"bg_021","master_path":"sources/library/generated_backgrounds/bg_021.png","master_dimensions":[1536,1024],"master_sha256":"f52e9f7c03e924454d8e04474526059269eea3309f609370eb2775069eeca0bc","original_path":"sources/library/generated_backgrounds/bg_021.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_021","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_021.png","input_dimensions":[512,512],"input_sha256":"c9b9284c6bffa1f7999a4f1d1a81d9bde6c27142c0889249efa480d6d68d1782","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_023","family":"gpt","concept":"University Workshop","photo_match":"photo_university_workshop","photo_candidate_index":23,"photo_scene_description":"Free 20K HDRI, unclipped. Spacious industrial university workshop with high skylit ceilings and concrete floor - medium contrast; ideal for product, hard-surface and arch‑viz renders.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph of an ordinary real environment. Semantic scene reference in words: Free 20K HDRI, unclipped. Spacious industrial university workshop with high skylit ceilings and concrete floor - medium contrast; ideal for product, hard-surface and arch‑viz renders.. Use the environmental content and lighting described, ignoring publisher language such as free, HDRI, unclipped, resolution, or panoramic. Generate an independent ordinary rectilinear camera view of this kind of environment, NOT an HDRI, NOT 360 degrees or fisheye. Landscape 1536x1024 framing, realistic camera perspective, deep focus and natural materials. Keep the scene recognizable with plausible details specific to this environment. Include a modest clear foreground floor, ground or work surface for later controlled target placement, without letting an empty surface dominate the whole scene. Full realistic color, natural irregular arrangements and asymmetrical composition. No people, no text or logos, no watermark, no panels, no collage, no mirroring, no spherical projection or studio spheres, no extreme bokeh, no painted/CG appearance. Text-only new generation; no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T04:01:40.146Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_023.png","dimensions":[1536,1024],"sha256":"ee35a32ca9c8ee7cd2af91b83ec1e8da60e27754491889fd41b27101306a198d","generation_id":"exec-e0e9f696-3862-4700-943a-0e493a653c1e","accepted":true,"source_group":"exec-e0e9f696-3862-4700-943a-0e493a653c1e","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_023","legacy_id":"bg_023","label":"University Workshop","name":"University Workshop","path":"generated_backgrounds/bg_023.png","raw_path":"sources/library/generated_backgrounds/bg_023.png","kind":"background","pair_id":"bg_023","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_023.webp","library_id":"gpt_bg_023","scene_family":"indoor","semantic_id":"bg_023","master_path":"sources/library/generated_backgrounds/bg_023.png","master_dimensions":[1536,1024],"master_sha256":"ee35a32ca9c8ee7cd2af91b83ec1e8da60e27754491889fd41b27101306a198d","original_path":"sources/library/generated_backgrounds/bg_023.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_023","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_023.png","input_dimensions":[512,512],"input_sha256":"13dc501df1a6684abcee9a58fff64947ec7e5e3d23ab4b582be2d8aeabfd5c6e","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_024","family":"gpt","concept":"Moon Lab","photo_match":"photo_moon_lab","photo_candidate_index":24,"photo_scene_description":"Free 24K HDRI of Spaceport Rostock's lunar test facility. Includes artificial regolith, simulated sunlight with a high-power halogen lamp at a low angle.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph of an ordinary real environment. Semantic scene reference in words: Free 24K HDRI of Spaceport Rostock's lunar test facility. Includes artificial regolith, simulated sunlight with a high-power halogen lamp at a low angle.. Use the environmental content and lighting described, ignoring publisher language such as free, HDRI, unclipped, resolution, or panoramic. Generate an independent ordinary rectilinear camera view of this kind of environment, NOT an HDRI, NOT 360 degrees or fisheye. Landscape 1536x1024 framing, realistic camera perspective, deep focus and natural materials. Keep the scene recognizable with plausible details specific to this environment. Include a modest clear foreground floor, ground or work surface for later controlled target placement, without letting an empty surface dominate the whole scene. Full realistic color, natural irregular arrangements and asymmetrical composition. No people, no text or logos, no watermark, no panels, no collage, no mirroring, no spherical projection or studio spheres, no extreme bokeh, no painted/CG appearance. Text-only new generation; no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T04:01:40.226Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_024.png","dimensions":[1536,1024],"sha256":"9e310fc009704ec29781e436ddb8f702d3ed6aa9c2962c72f399cb652e2d11ab","generation_id":"exec-c28945a8-e306-4407-a9f3-5aa150c36aab","accepted":true,"source_group":"exec-c28945a8-e306-4407-a9f3-5aa150c36aab","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_024","legacy_id":"bg_024","label":"Moon Lab","name":"Moon Lab","path":"generated_backgrounds/bg_024.png","raw_path":"sources/library/generated_backgrounds/bg_024.png","kind":"background","pair_id":"bg_024","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_024.webp","library_id":"gpt_bg_024","scene_family":"indoor","semantic_id":"bg_024","master_path":"sources/library/generated_backgrounds/bg_024.png","master_dimensions":[1536,1024],"master_sha256":"9e310fc009704ec29781e436ddb8f702d3ed6aa9c2962c72f399cb652e2d11ab","original_path":"sources/library/generated_backgrounds/bg_024.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_024","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_024.png","input_dimensions":[512,512],"input_sha256":"f6fbd6681c05cd7ad122ac761d44796c140183028989a98890f4753f82a9b4bb","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_026","family":"gpt","concept":"Billiard Hall","photo_match":"photo_billiard_hall","photo_candidate_index":30,"photo_scene_description":"Free 24K HDRI, unclipped: warm indoor billiard hall with morning sunlight and soft overhead lamps, medium contrast, brick walls, carpeted floor, and pool tables.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph of an ordinary real environment. Semantic scene reference in words: Free 24K HDRI, unclipped: warm indoor billiard hall with morning sunlight and soft overhead lamps, medium contrast, brick walls, carpeted floor, and pool tables.. Use the environmental content and lighting described, ignoring publisher language such as free, HDRI, unclipped, resolution, or panoramic. Generate an independent ordinary rectilinear camera view of this kind of environment, NOT an HDRI, NOT 360 degrees or fisheye. Landscape 1536x1024 framing, realistic camera perspective, deep focus and natural materials. Keep the scene recognizable with plausible details specific to this environment. Include a modest clear foreground floor, ground or work surface for later controlled target placement, without letting an empty surface dominate the whole scene. Full realistic color, natural irregular arrangements and asymmetrical composition. No people, no text or logos, no watermark, no panels, no collage, no mirroring, no spherical projection or studio spheres, no extreme bokeh, no painted/CG appearance. Text-only new generation; no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T04:03:54.874Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_026.png","dimensions":[1536,1024],"sha256":"dcfa3b6133b421a1fcd1cbd44aef1816c696a77e1ff37a5305232a028ef55947","generation_id":"exec-e5a32237-e97b-499a-b0ce-2fc83d765d71","accepted":true,"source_group":"exec-e5a32237-e97b-499a-b0ce-2fc83d765d71","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_026","legacy_id":"bg_026","label":"Billiard Hall","name":"Billiard Hall","path":"generated_backgrounds/bg_026.png","raw_path":"sources/library/generated_backgrounds/bg_026.png","kind":"background","pair_id":"bg_026","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_026.webp","library_id":"gpt_bg_026","scene_family":"indoor","semantic_id":"bg_026","master_path":"sources/library/generated_backgrounds/bg_026.png","master_dimensions":[1536,1024],"master_sha256":"dcfa3b6133b421a1fcd1cbd44aef1816c696a77e1ff37a5305232a028ef55947","original_path":"sources/library/generated_backgrounds/bg_026.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_026","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_026.png","input_dimensions":[512,512],"input_sha256":"eda01ff665a9b0c1b748a5c74683dff5e37921a7dc336f106b52ff2e274361f0","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_028","family":"gpt","concept":"Empty Play Room","photo_match":"photo_empty_play_room","photo_candidate_index":32,"photo_scene_description":"Free 24K unclipped HDRI: sparse room with morning sun and fluorescent fixtures, medium contrast - carpeted floor, table tennis, curtains, brick and warm wood surfaces.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph of an ordinary real environment. Semantic scene reference in words: Free 24K unclipped HDRI: sparse room with morning sun and fluorescent fixtures, medium contrast - carpeted floor, table tennis, curtains, brick and warm wood surfaces.. Use the environmental content and lighting described, ignoring publisher language such as free, HDRI, unclipped, resolution, or panoramic. Generate an independent ordinary rectilinear camera view of this kind of environment, NOT an HDRI, NOT 360 degrees or fisheye. Landscape 1536x1024 framing, realistic camera perspective, deep focus and natural materials. Keep the scene recognizable with plausible details specific to this environment. Include a modest clear foreground floor, ground or work surface for later controlled target placement, without letting an empty surface dominate the whole scene. Full realistic color, natural irregular arrangements and asymmetrical composition. No people, no text or logos, no watermark, no panels, no collage, no mirroring, no spherical projection or studio spheres, no extreme bokeh, no painted/CG appearance. Text-only new generation; no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T04:03:55.052Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_028.png","dimensions":[1536,1024],"sha256":"cded84a41af9291d5851075e500d50866d66890d266434995c6c71371054ad85","generation_id":"exec-16d23f69-477e-482f-8465-3e4ddab2d10c","accepted":true,"source_group":"exec-16d23f69-477e-482f-8465-3e4ddab2d10c","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_028","legacy_id":"bg_028","label":"Empty Play Room","name":"Empty Play Room","path":"generated_backgrounds/bg_028.png","raw_path":"sources/library/generated_backgrounds/bg_028.png","kind":"background","pair_id":"bg_028","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_028.webp","library_id":"gpt_bg_028","scene_family":"indoor","semantic_id":"bg_028","master_path":"sources/library/generated_backgrounds/bg_028.png","master_dimensions":[1536,1024],"master_sha256":"cded84a41af9291d5851075e500d50866d66890d266434995c6c71371054ad85","original_path":"sources/library/generated_backgrounds/bg_028.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_028","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_028.png","input_dimensions":[512,512],"input_sha256":"fbfaacf8b1519003bd6b90b86493b80f62b278e89003d5de2314113f4b18562e","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_029","family":"gpt","concept":"Hospital Room 2","photo_match":"photo_hospital_room_2","photo_candidate_index":34,"photo_scene_description":"Free 20K unclipped HDRI of a hospital ward with cool fluorescent overheads, soft shadows, medium contrast and a calm, clinical blue-tinted environment.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph of an ordinary real environment. Semantic scene reference in words: Free 20K unclipped HDRI of a hospital ward with cool fluorescent overheads, soft shadows, medium contrast and a calm, clinical blue-tinted environment.. Use the environmental content and lighting described, ignoring publisher language such as free, HDRI, unclipped, resolution, or panoramic. Generate an independent ordinary rectilinear camera view of this kind of environment, NOT an HDRI, NOT 360 degrees or fisheye. Landscape 1536x1024 framing, realistic camera perspective, deep focus and natural materials. Keep the scene recognizable with plausible details specific to this environment. Include a modest clear foreground floor, ground or work surface for later controlled target placement, without letting an empty surface dominate the whole scene. Full realistic color, natural irregular arrangements and asymmetrical composition. No people, no text or logos, no watermark, no panels, no collage, no mirroring, no spherical projection or studio spheres, no extreme bokeh, no painted/CG appearance. Text-only new generation; no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T04:05:56.753Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_029.png","dimensions":[1536,1024],"sha256":"6be7a13c99653a795bef97f796f80b9931579a6691b914fdadbc229d2f1b70be","generation_id":"exec-c3d6f954-bb01-402e-ad50-2d45db8b53d8","accepted":true,"source_group":"exec-c3d6f954-bb01-402e-ad50-2d45db8b53d8","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_029","legacy_id":"bg_029","label":"Hospital Room 2","name":"Hospital Room 2","path":"generated_backgrounds/bg_029.png","raw_path":"sources/library/generated_backgrounds/bg_029.png","kind":"background","pair_id":"bg_029","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_029.webp","library_id":"gpt_bg_029","scene_family":"indoor","semantic_id":"bg_029","master_path":"sources/library/generated_backgrounds/bg_029.png","master_dimensions":[1536,1024],"master_sha256":"6be7a13c99653a795bef97f796f80b9931579a6691b914fdadbc229d2f1b70be","original_path":"sources/library/generated_backgrounds/bg_029.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_029","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_029.png","input_dimensions":[512,512],"input_sha256":"871b781f170fe786f849d9ccddc08b9b280480ab78d4a371099d23f75c03f856","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_030","family":"gpt","concept":"Modern Bathroom","photo_match":"photo_modern_bathroom","photo_candidate_index":35,"photo_scene_description":"Unclipped, free 16K HDRI of a modern bathroom with soft midday skylight through a roof window, low contrast natural light, cool tones and soft reflections.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph of an ordinary real environment. Semantic scene reference in words: Unclipped, free 16K HDRI of a modern bathroom with soft midday skylight through a roof window, low contrast natural light, cool tones and soft reflections.. Use the environmental content and lighting described, ignoring publisher language such as free, HDRI, unclipped, resolution, or panoramic. Generate an independent ordinary rectilinear camera view of this kind of environment, NOT an HDRI, NOT 360 degrees or fisheye. Landscape 1536x1024 framing, realistic camera perspective, deep focus and natural materials. Keep the scene recognizable with plausible details specific to this environment. Include a modest clear foreground floor, ground or work surface for later controlled target placement, without letting an empty surface dominate the whole scene. Full realistic color, natural irregular arrangements and asymmetrical composition. No people, no text or logos, no watermark, no panels, no collage, no mirroring, no spherical projection or studio spheres, no extreme bokeh, no painted/CG appearance. Text-only new generation; no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T04:05:56.888Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_030.png","dimensions":[1536,1024],"sha256":"a6c454c7e00a103b173428b15dfaa341143666138b22e079bf862bb9c8f4be69","generation_id":"exec-3babe0d6-d966-4f42-ac9e-7dc12cc84721","accepted":true,"source_group":"exec-3babe0d6-d966-4f42-ac9e-7dc12cc84721","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_030","legacy_id":"bg_030","label":"Modern Bathroom","name":"Modern Bathroom","path":"generated_backgrounds/bg_030.png","raw_path":"sources/library/generated_backgrounds/bg_030.png","kind":"background","pair_id":"bg_030","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_030.webp","library_id":"gpt_bg_030","scene_family":"indoor","semantic_id":"bg_030","master_path":"sources/library/generated_backgrounds/bg_030.png","master_dimensions":[1536,1024],"master_sha256":"a6c454c7e00a103b173428b15dfaa341143666138b22e079bf862bb9c8f4be69","original_path":"sources/library/generated_backgrounds/bg_030.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_030","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_030.png","input_dimensions":[512,512],"input_sha256":"8f064ac7b3ab2f1d645d1f638c079c7f2af00fed4dbba39407018c01fa034ba9","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_036","family":"gpt","concept":"Empty Workshop","photo_match":"photo_empty_workshop","photo_candidate_index":44,"photo_scene_description":"Free 16K unclipped HDRI of an empty midday workshop - natural, medium-contrast sunlight filtering through dusty windows onto brick, concrete and wooden surfaces.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph of an ordinary real environment. Semantic scene reference in words: Free 16K unclipped HDRI of an empty midday workshop - natural, medium-contrast sunlight filtering through dusty windows onto brick, concrete and wooden surfaces.. Use the environmental content and lighting described, ignoring publisher language such as free, HDRI, unclipped, resolution, or panoramic. Generate an independent ordinary rectilinear camera view of this kind of environment, NOT an HDRI, NOT 360 degrees or fisheye. Landscape 1536x1024 framing, realistic camera perspective, deep focus and natural materials. Keep the scene recognizable with plausible details specific to this environment. Include a modest clear foreground floor, ground or work surface for later controlled target placement, without letting an empty surface dominate the whole scene. Full realistic color, natural irregular arrangements and asymmetrical composition. No people, no text or logos, no watermark, no panels, no collage, no mirroring, no spherical projection or studio spheres, no extreme bokeh, no painted/CG appearance. Text-only new generation; no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T04:07:57.951Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_036.png","dimensions":[1536,1024],"sha256":"be04c74421c38e3b169a4543ad8b96ae273e07b659c49b1fb89df8fb94e3f266","generation_id":"exec-88fa37bd-3788-4abd-a106-f43522df5ff4","accepted":true,"source_group":"exec-88fa37bd-3788-4abd-a106-f43522df5ff4","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_036","legacy_id":"bg_036","label":"Empty Workshop","name":"Empty Workshop","path":"generated_backgrounds/bg_036.png","raw_path":"sources/library/generated_backgrounds/bg_036.png","kind":"background","pair_id":"bg_036","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_036.webp","library_id":"gpt_bg_036","scene_family":"indoor","semantic_id":"bg_036","master_path":"sources/library/generated_backgrounds/bg_036.png","master_dimensions":[1536,1024],"master_sha256":"be04c74421c38e3b169a4543ad8b96ae273e07b659c49b1fb89df8fb94e3f266","original_path":"sources/library/generated_backgrounds/bg_036.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_036","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_036.png","input_dimensions":[512,512],"input_sha256":"ab73b5a451361d5afe0894593345588a35afe53953b23e307badeb3d37c6a239","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_040","family":"gpt","concept":"School Hall","photo_match":"photo_school_hall","photo_candidate_index":48,"photo_scene_description":"Free 24K, unclipped HDRI of a school hall stage: warm morning/afternoon sunlight plus artificial lights, wooden floor glow, medium contrast and soft shadows.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph of an ordinary real environment. Semantic scene reference in words: Free 24K, unclipped HDRI of a school hall stage: warm morning/afternoon sunlight plus artificial lights, wooden floor glow, medium contrast and soft shadows.. Use the environmental content and lighting described, ignoring publisher language such as free, HDRI, unclipped, resolution, or panoramic. Generate an independent ordinary rectilinear camera view of this kind of environment, NOT an HDRI, NOT 360 degrees or fisheye. Landscape 1536x1024 framing, realistic camera perspective, deep focus and natural materials. Keep the scene recognizable with plausible details specific to this environment. Include a modest clear foreground floor, ground or work surface for later controlled target placement, without letting an empty surface dominate the whole scene. Full realistic color, natural irregular arrangements and asymmetrical composition. No people, no text or logos, no watermark, no panels, no collage, no mirroring, no spherical projection or studio spheres, no extreme bokeh, no painted/CG appearance. Text-only new generation; no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T04:10:34.722Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_040.png","dimensions":[1536,1024],"sha256":"eceea729e40964e175f498c5db8baccdfab8344b0f149b37114d96c6dc505a35","generation_id":"exec-5c1bf1f8-350f-4ad1-8e0a-d4425ded4472","accepted":true,"source_group":"exec-5c1bf1f8-350f-4ad1-8e0a-d4425ded4472","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_040","legacy_id":"bg_040","label":"School Hall","name":"School Hall","path":"generated_backgrounds/bg_040.png","raw_path":"sources/library/generated_backgrounds/bg_040.png","kind":"background","pair_id":"bg_040","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_040.webp","library_id":"gpt_bg_040","scene_family":"indoor","semantic_id":"bg_040","master_path":"sources/library/generated_backgrounds/bg_040.png","master_dimensions":[1536,1024],"master_sha256":"eceea729e40964e175f498c5db8baccdfab8344b0f149b37114d96c6dc505a35","original_path":"sources/library/generated_backgrounds/bg_040.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_040","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_040.png","input_dimensions":[512,512],"input_sha256":"4f6c245e519ab2db7c2b78eb84d87d49c96878e322d701432cd735b28b7c8568","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_041","family":"gpt","concept":"wood kitchen table","photo_match":"photo_pine_table","provenance":"gpt","source_path":"sources/library/generated_backgrounds/bg_041.png","dimensions":[1536,1024],"sha256":"7d51e8680c03d0fc5cd2ee4ee1e916c2706451c7190ecf2dbb65270435db17e6","full_prompt":"Use case: photorealistic-natural. Create ONE realistic high resolution overhead photograph of an ordinary kitchen dining tabletop, landscape 3:2. Camera directly overhead, entire image is a real warm honey oak table with visible grain, small irregular wear and natural gentle light variation. A folded blue and cream gingham kitchen towel partly enters the top left edge, a leafy herb pot is partly visible at top right edge, a tiny edge of a patterned ceramic plate at lower left, the center and lower-right 70 percent is clear wood for adding controlled test objects. Complete image colorful, textured and recognizable as kitchen, not a flat empty gray studio. No fruit, no cutlery, no cup, no hands, no letters, no watermark, no artificial blur, no vignette. Soft diffuse daylight and every part in sharp focus, no strong shadows. One scene only, no collage.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","source_group":"gpt_kitchen_table","generation_id":null,"generation_time":null,"new_call_this_stage":false,"tasks":["T1","T2","T3","T4","T5"],"placement_note":"Visually reviewed clear near-overhead continuous support surface; ROI is [left,top,right,bottom] in original coordinates. Target scale, contact and composition require task rendering QA.","accepted":true,"placement_review_approved":true,"placement_roi_normalized":[0.14,0.34,0.95,0.95],"plan_id":"bg_041","legacy_id":"bg_041","label":"wood kitchen table","name":"wood kitchen table","path":"generated_backgrounds/bg_041.png","raw_path":"sources/library/generated_backgrounds/bg_041.png","kind":"background","pair_id":"bg_041","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T2","T3","T4","T5"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_041.webp","library_id":"gpt_bg_041","scene_family":"kitchen","semantic_id":"bg_041","master_path":"sources/library/generated_backgrounds/bg_041.png","master_dimensions":[1536,1024],"master_sha256":"7d51e8680c03d0fc5cd2ee4ee1e916c2706451c7190ecf2dbb65270435db17e6","original_path":"sources/library/generated_backgrounds/bg_041.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_041","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_041.png","input_dimensions":[512,512],"input_sha256":"72bea8ee1fa80fddfa5ab8fee478e369615f0f05b48df3d31462442b5a7d23ca","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_042","family":"gpt","concept":"Small Workshop","photo_match":"photo_small_workshop","photo_candidate_index":49,"photo_scene_description":"Unclipped, free 24K HDRI of a small workshop with fluorescent fixtures and gentle morning sunlight, low - medium contrast, muted warm, dusty indoor mood.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph of an ordinary real environment. Semantic scene reference in words: Unclipped, free 24K HDRI of a small workshop with fluorescent fixtures and gentle morning sunlight, low - medium contrast, muted warm, dusty indoor mood.. Use the environmental content and lighting described, ignoring publisher language such as free, HDRI, unclipped, resolution, or panoramic. Generate an independent ordinary rectilinear camera view of this kind of environment, NOT an HDRI, NOT 360 degrees or fisheye. Landscape 1536x1024 framing, realistic camera perspective, deep focus and natural materials. Keep the scene recognizable with plausible details specific to this environment. Include a modest clear foreground floor, ground or work surface for later controlled target placement, without letting an empty surface dominate the whole scene. Full realistic color, natural irregular arrangements and asymmetrical composition. No people, no text or logos, no watermark, no panels, no collage, no mirroring, no spherical projection or studio spheres, no extreme bokeh, no painted/CG appearance. Text-only new generation; no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T04:12:47.779Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_042.png","dimensions":[1536,1024],"sha256":"dfb01f6a8c81d97a7c2dd88b3bbf66799d39214e5a83b4e516ad8e61b44191e8","generation_id":"exec-552e335a-4283-4bc9-8532-9fe95f0d2152","accepted":true,"source_group":"exec-552e335a-4283-4bc9-8532-9fe95f0d2152","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_042","legacy_id":"bg_042","label":"Small Workshop","name":"Small Workshop","path":"generated_backgrounds/bg_042.png","raw_path":"sources/library/generated_backgrounds/bg_042.png","kind":"background","pair_id":"bg_042","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_042.webp","library_id":"gpt_bg_042","scene_family":"indoor","semantic_id":"bg_042","master_path":"sources/library/generated_backgrounds/bg_042.png","master_dimensions":[1536,1024],"master_sha256":"dfb01f6a8c81d97a7c2dd88b3bbf66799d39214e5a83b4e516ad8e61b44191e8","original_path":"sources/library/generated_backgrounds/bg_042.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_042","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_042.png","input_dimensions":[512,512],"input_sha256":"142cc83371b6c9722ecadaba04feb966b9aa1bb914ff33af25840c901ec2d1dc","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_045","family":"gpt","concept":"Industrial Workshop Foundry","photo_match":"photo_industrial_workshop_foundry","photo_candidate_index":54,"photo_scene_description":"Free 24K unclipped HDRI of an industrial workshop: medium-contrast, warm skylight with cool artificial lamps, glossy floor reflections, strong metal highlights.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph of an ordinary real environment. Semantic scene reference in words: Free 24K unclipped HDRI of an industrial workshop: medium-contrast, warm skylight with cool artificial lamps, glossy floor reflections, strong metal highlights.. Use the environmental content and lighting described, ignoring publisher language such as free, HDRI, unclipped, resolution, or panoramic. Generate an independent ordinary rectilinear camera view of this kind of environment, NOT an HDRI, NOT 360 degrees or fisheye. Landscape 1536x1024 framing, realistic camera perspective, deep focus and natural materials. Keep the scene recognizable with plausible details specific to this environment. Include a modest clear foreground floor, ground or work surface for later controlled target placement, without letting an empty surface dominate the whole scene. Full realistic color, natural irregular arrangements and asymmetrical composition. No people, no text or logos, no watermark, no panels, no collage, no mirroring, no spherical projection or studio spheres, no extreme bokeh, no painted/CG appearance. Text-only new generation; no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T04:12:48.058Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_045.png","dimensions":[1536,1024],"sha256":"15985a6cdfff5920edf49a7d17b956597a6f0116829925e78c04f2821889e0e0","generation_id":"exec-9c054198-43ae-47b3-8c9a-ca7ce8d7865c","accepted":true,"source_group":"exec-9c054198-43ae-47b3-8c9a-ca7ce8d7865c","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_045","legacy_id":"bg_045","label":"Industrial Workshop Foundry","name":"Industrial Workshop Foundry","path":"generated_backgrounds/bg_045.png","raw_path":"sources/library/generated_backgrounds/bg_045.png","kind":"background","pair_id":"bg_045","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_045.webp","library_id":"gpt_bg_045","scene_family":"indoor","semantic_id":"bg_045","master_path":"sources/library/generated_backgrounds/bg_045.png","master_dimensions":[1536,1024],"master_sha256":"15985a6cdfff5920edf49a7d17b956597a6f0116829925e78c04f2821889e0e0","original_path":"sources/library/generated_backgrounds/bg_045.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_045","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_045.png","input_dimensions":[512,512],"input_sha256":"9227406202e4af5032676d0bcb09948d489358cc80aaec6805a2dbf6d511f223","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_050","family":"gpt","concept":"Comfy Café","photo_match":"photo_comfy_cafe","photo_candidate_index":67,"photo_scene_description":"Free 16K unclipped HDRI: warm, low-contrast indoor café with soft artificial lamps, gentle shadows and cozy shop ambiance.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph of an ordinary real environment. Semantic scene reference in words: Free 16K unclipped HDRI: warm, low-contrast indoor café with soft artificial lamps, gentle shadows and cozy shop ambiance.. Use the environmental content and lighting described, ignoring publisher language such as free, HDRI, unclipped, resolution, or panoramic. Generate an independent ordinary rectilinear camera view of this kind of environment, NOT an HDRI, NOT 360 degrees or fisheye. Landscape 1536x1024 framing, realistic camera perspective, deep focus and natural materials. Keep the scene recognizable with plausible details specific to this environment. Include a modest clear foreground floor, ground or work surface for later controlled target placement, without letting an empty surface dominate the whole scene. Full realistic color, natural irregular arrangements and asymmetrical composition. 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Text-only new generation; no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T04:15:01.144Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_050.png","dimensions":[1536,1024],"sha256":"cddc456dd5bff07ca4c29857875b0f3662185b5b9e2586894d6eafc78e042272","generation_id":"exec-0c0f6f61-7663-4a27-9f97-c4008a83d094","accepted":true,"source_group":"exec-0c0f6f61-7663-4a27-9f97-c4008a83d094","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_050","legacy_id":"bg_050","label":"Comfy Café","name":"Comfy Café","path":"generated_backgrounds/bg_050.png","raw_path":"sources/library/generated_backgrounds/bg_050.png","kind":"background","pair_id":"bg_050","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. 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Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_050.webp","library_id":"gpt_bg_050","scene_family":"indoor","semantic_id":"bg_050","master_path":"sources/library/generated_backgrounds/bg_050.png","master_dimensions":[1536,1024],"master_sha256":"cddc456dd5bff07ca4c29857875b0f3662185b5b9e2586894d6eafc78e042272","original_path":"sources/library/generated_backgrounds/bg_050.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_050","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_050.png","input_dimensions":[512,512],"input_sha256":"50550d52bc1e1808ec9a5f11c72e10404a8ee6373040494c0f27e515f6502935","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_053","family":"gpt","concept":"Auto Service","photo_match":"photo_auto_service","photo_candidate_index":71,"photo_scene_description":"Unclipped, free 16K HDRI of an industrial concrete auto workshop with warm artificial ceiling lights, soft daylight at an open door, medium contrast, gritty mood.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph of an ordinary real environment. Semantic scene reference in words: Unclipped, free 16K HDRI of an industrial concrete auto workshop with warm artificial ceiling lights, soft daylight at an open door, medium contrast, gritty mood.. Use the environmental content and lighting described, ignoring publisher language such as free, HDRI, unclipped, resolution, or panoramic. Generate an independent ordinary rectilinear camera view of this kind of environment, NOT an HDRI, NOT 360 degrees or fisheye. Landscape 1536x1024 framing, realistic camera perspective, deep focus and natural materials. Keep the scene recognizable with plausible details specific to this environment. Include a modest clear foreground floor, ground or work surface for later controlled target placement, without letting an empty surface dominate the whole scene. Full realistic color, natural irregular arrangements and asymmetrical composition. No people, no text or logos, no watermark, no panels, no collage, no mirroring, no spherical projection or studio spheres, no extreme bokeh, no painted/CG appearance. Text-only new generation; no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T04:18:51.899Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_053.png","dimensions":[1536,1024],"sha256":"8394df13ef9745b093c20dbe8421d88985e4a99ac36bd9486f012234a3faaeaa","generation_id":"exec-35b6eaef-baac-42ba-97ae-29f6fcc01514","accepted":true,"source_group":"exec-35b6eaef-baac-42ba-97ae-29f6fcc01514","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_053","legacy_id":"bg_053","label":"Auto Service","name":"Auto Service","path":"generated_backgrounds/bg_053.png","raw_path":"sources/library/generated_backgrounds/bg_053.png","kind":"background","pair_id":"bg_053","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. 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Create ONE new high-quality full-color documentary photograph of an ordinary real environment. Semantic scene reference in words: Free 16K unclipped HDRI of a dusty carpentry shop with warm fluorescent ceiling lamps, high-contrast shadows, gritty yellowed tones and strong fill.. Use the environmental content and lighting described, ignoring publisher language such as free, HDRI, unclipped, resolution, or panoramic. Generate an independent ordinary rectilinear camera view of this kind of environment, NOT an HDRI, NOT 360 degrees or fisheye. Landscape 1536x1024 framing, realistic camera perspective, deep focus and natural materials. Keep the scene recognizable with plausible details specific to this environment. Include a modest clear foreground floor, ground or work surface for later controlled target placement, without letting an empty surface dominate the whole scene. Full realistic color, natural irregular arrangements and asymmetrical composition. 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Text-only new generation; no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T04:18:51.977Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_054.png","dimensions":[1536,1024],"sha256":"a61ab14cec598a321f20b4001b9d70a60b390b3bbc7aac5661aaffd4c56aeead","generation_id":"exec-05ed0b74-b3e7-4be4-8f74-e5342b34ba33","accepted":true,"source_group":"exec-05ed0b74-b3e7-4be4-8f74-e5342b34ba33","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_054","legacy_id":"bg_054","label":"Workshop interior","name":"Workshop interior","path":"generated_backgrounds/bg_054.png","raw_path":"sources/library/generated_backgrounds/bg_054.png","kind":"background","pair_id":"bg_054","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. 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Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_054.webp","library_id":"gpt_bg_054","scene_family":"industrial","semantic_id":"bg_054","master_path":"sources/library/generated_backgrounds/bg_054.png","master_dimensions":[1536,1024],"master_sha256":"a61ab14cec598a321f20b4001b9d70a60b390b3bbc7aac5661aaffd4c56aeead","original_path":"sources/library/generated_backgrounds/bg_054.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_054","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_054.png","input_dimensions":[512,512],"input_sha256":"9d5486a7d0966220570dedb6ede7ce87f80b8f8f36a479914967ca0e29e28976","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_058","family":"gpt","concept":"Hangar Interior","photo_match":"photo_hangar_interior","photo_candidate_index":78,"photo_scene_description":"Unclipped, free 20K HDRI of a hangar interior with natural midday light - bright open-bay backlight, skylight patches, soft shadows and medium contrast.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph of an ordinary real environment. Semantic scene reference in words: Unclipped, free 20K HDRI of a hangar interior with natural midday light - bright open-bay backlight, skylight patches, soft shadows and medium contrast.. Use the environmental content and lighting described, ignoring publisher language such as free, HDRI, unclipped, resolution, or panoramic. Generate an independent ordinary rectilinear camera view of this kind of environment, NOT an HDRI, NOT 360 degrees or fisheye. Landscape 1536x1024 framing, realistic camera perspective, deep focus and natural materials. Keep the scene recognizable with plausible details specific to this environment. Include a modest clear foreground floor, ground or work surface for later controlled target placement, without letting an empty surface dominate the whole scene. Full realistic color, natural irregular arrangements and asymmetrical composition. No people, no text or logos, no watermark, no panels, no collage, no mirroring, no spherical projection or studio spheres, no extreme bokeh, no painted/CG appearance. Text-only new generation; no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T04:21:53.181Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_058.png","dimensions":[1536,1024],"sha256":"54abedd2c63ac16c9aee4faf9aafe3f311c8b7d72af75ae3ac751b67d24fe4f7","generation_id":"exec-38c9a7b2-2585-4451-a479-412f2efccb2e","accepted":true,"source_group":"exec-38c9a7b2-2585-4451-a479-412f2efccb2e","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_058","legacy_id":"bg_058","label":"Hangar Interior","name":"Hangar Interior","path":"generated_backgrounds/bg_058.png","raw_path":"sources/library/generated_backgrounds/bg_058.png","kind":"background","pair_id":"bg_058","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. 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Create ONE new high-quality full-color documentary photograph of an ordinary real environment. Semantic scene reference in words: Free 16K unclipped HDRI: empty interior construction at midday with soft, low-contrast diffuse daylight, neutral wood, brick and chipboard.. Use the environmental content and lighting described, ignoring publisher language such as free, HDRI, unclipped, resolution, or panoramic. Generate an independent ordinary rectilinear camera view of this kind of environment, NOT an HDRI, NOT 360 degrees or fisheye. Landscape 1536x1024 framing, realistic camera perspective, deep focus and natural materials. Keep the scene recognizable with plausible details specific to this environment. Include a modest clear foreground floor, ground or work surface for later controlled target placement, without letting an empty surface dominate the whole scene. Full realistic color, natural irregular arrangements and asymmetrical composition. 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Bright morning sun with partly cloudy sky, high-contrast natural light casting crisp shadows over a concrete urban construction yard and apartment blocks.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph of an ordinary real environment. Semantic scene reference in words: Free 16K HDRI, unclipped. Bright morning sun with partly cloudy sky, high-contrast natural light casting crisp shadows over a concrete urban construction yard and apartment blocks.. Use the environmental content and lighting described, ignoring publisher language such as free, HDRI, unclipped, resolution, or panoramic. Generate an independent ordinary rectilinear camera view of this kind of environment, NOT an HDRI, NOT 360 degrees or fisheye. Landscape 1536x1024 framing, realistic camera perspective, deep focus and natural materials. Keep the scene recognizable with plausible details specific to this environment. Include a modest clear foreground floor, ground or work surface for later controlled target placement, without letting an empty surface dominate the whole scene. Full realistic color, natural irregular arrangements and asymmetrical composition. No people, no text or logos, no watermark, no panels, no collage, no mirroring, no spherical projection or studio spheres, no extreme bokeh, no painted/CG appearance. 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Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_062.webp","library_id":"gpt_bg_062","scene_family":"industrial","semantic_id":"bg_062","master_path":"sources/library/generated_backgrounds/bg_062.png","master_dimensions":[1536,1024],"master_sha256":"e0108be22d730405175419cca80edd8233736995187f853f21c4533cf867c516","original_path":"sources/library/generated_backgrounds/bg_062.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_062","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_062.png","input_dimensions":[512,512],"input_sha256":"f17c8710ad51a3671212a4cbbcbb03cbbc7e103ec31507f5b7fac89be20e5ac7","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_064","family":"gpt","concept":"Freight Station","photo_match":"photo_freight_station","photo_candidate_index":85,"photo_scene_description":"Free 16K unclipped HDRI of an industrial freight yard at sunset, warm low sun, partly cloudy sky, silhouetted cranes and medium-contrast natural light.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph of an ordinary real environment. Semantic scene reference in words: Free 16K unclipped HDRI of an industrial freight yard at sunset, warm low sun, partly cloudy sky, silhouetted cranes and medium-contrast natural light.. Use the environmental content and lighting described, ignoring publisher language such as free, HDRI, unclipped, resolution, or panoramic. Generate an independent ordinary rectilinear camera view of this kind of environment, NOT an HDRI, NOT 360 degrees or fisheye. Landscape 1536x1024 framing, realistic camera perspective, deep focus and natural materials. Keep the scene recognizable with plausible details specific to this environment. Include a modest clear foreground floor, ground or work surface for later controlled target placement, without letting an empty surface dominate the whole scene. Full realistic color, natural irregular arrangements and asymmetrical composition. No people, no text or logos, no watermark, no panels, no collage, no mirroring, no spherical projection or studio spheres, no extreme bokeh, no painted/CG appearance. Text-only new generation; no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T04:38:47.996Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_064.png","dimensions":[1536,1024],"sha256":"3db6ae7d189113e20ac17052d18c02851bdbd5770691eb9bc4c5a2f20eadcc50","generation_id":"exec-27123aac-1f98-4a08-8bd5-b261c4d10788","accepted":true,"source_group":"exec-27123aac-1f98-4a08-8bd5-b261c4d10788","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_064","legacy_id":"bg_064","label":"Freight Station","name":"Freight Station","path":"generated_backgrounds/bg_064.png","raw_path":"sources/library/generated_backgrounds/bg_064.png","kind":"background","pair_id":"bg_064","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_064.webp","library_id":"gpt_bg_064","scene_family":"industrial","semantic_id":"bg_064","master_path":"sources/library/generated_backgrounds/bg_064.png","master_dimensions":[1536,1024],"master_sha256":"3db6ae7d189113e20ac17052d18c02851bdbd5770691eb9bc4c5a2f20eadcc50","original_path":"sources/library/generated_backgrounds/bg_064.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_064","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_064.png","input_dimensions":[512,512],"input_sha256":"c03d6a3b9b75cd6b3a41201ad5999e33ef8dbd020b55750b81752e8f1a98d3ee","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_065","family":"gpt","concept":"Industrial Pipe & Valve 02","photo_match":"photo_industrial_pipe_and_valve_02","photo_candidate_index":86,"photo_scene_description":"Free 16K HDRI, unclipped - warm indoor warehouse lighting with high-contrast artificial lamps, bright open bay daylight, long soft shadows and industrial mood.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph of an ordinary real environment. Semantic scene reference in words: Free 16K HDRI, unclipped - warm indoor warehouse lighting with high-contrast artificial lamps, bright open bay daylight, long soft shadows and industrial mood.. Use the environmental content and lighting described, ignoring publisher language such as free, HDRI, unclipped, resolution, or panoramic. Generate an independent ordinary rectilinear camera view of this kind of environment, NOT an HDRI, NOT 360 degrees or fisheye. Landscape 1536x1024 framing, realistic camera perspective, deep focus and natural materials. Keep the scene recognizable with plausible details specific to this environment. Include a modest clear foreground floor, ground or work surface for later controlled target placement, without letting an empty surface dominate the whole scene. Full realistic color, natural irregular arrangements and asymmetrical composition. No people, no text or logos, no watermark, no panels, no collage, no mirroring, no spherical projection or studio spheres, no extreme bokeh, no painted/CG appearance. Text-only new generation; no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T04:38:48.091Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_065.png","dimensions":[1536,1024],"sha256":"f699c4be8d1d769a8d0ff28072dd2c6b0700fa00105cc4d02716b963487afa6f","generation_id":"exec-584058b1-e0fe-4a05-b392-e9f9dff61c31","accepted":true,"source_group":"exec-584058b1-e0fe-4a05-b392-e9f9dff61c31","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_065","legacy_id":"bg_065","label":"Industrial Pipe & Valve 02","name":"Industrial Pipe & Valve 02","path":"generated_backgrounds/bg_065.png","raw_path":"sources/library/generated_backgrounds/bg_065.png","kind":"background","pair_id":"bg_065","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_065.webp","library_id":"gpt_bg_065","scene_family":"industrial","semantic_id":"bg_065","master_path":"sources/library/generated_backgrounds/bg_065.png","master_dimensions":[1536,1024],"master_sha256":"f699c4be8d1d769a8d0ff28072dd2c6b0700fa00105cc4d02716b963487afa6f","original_path":"sources/library/generated_backgrounds/bg_065.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_065","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_065.png","input_dimensions":[512,512],"input_sha256":"038b36d2d235b6a6a492e68a8bd0b3ce635d5f0bb0fcc01092db88a53dd19e7a","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_068","family":"gpt","concept":"Snowy Forest","photo_match":"photo_snowy_forest","photo_candidate_index":95,"photo_scene_description":"Unclipped, free 16K HDRI of an overcast snowy forest in morning/afternoon - low-contrast, soft cool diffuse light, mossy floor and scattered snow patches.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph of an ordinary real environment. Semantic scene reference in words: Unclipped, free 16K HDRI of an overcast snowy forest in morning/afternoon - low-contrast, soft cool diffuse light, mossy floor and scattered snow patches.. Use the environmental content and lighting described, ignoring publisher language such as free, HDRI, unclipped, resolution, or panoramic. Generate an independent ordinary rectilinear camera view of this kind of environment, NOT an HDRI, NOT 360 degrees or fisheye. Landscape 1536x1024 framing, realistic camera perspective, deep focus and natural materials. Keep the scene recognizable with plausible details specific to this environment. Include a modest clear foreground floor, ground or work surface for later controlled target placement, without letting an empty surface dominate the whole scene. Full realistic color, natural irregular arrangements and asymmetrical composition. No people, no text or logos, no watermark, no panels, no collage, no mirroring, no spherical projection or studio spheres, no extreme bokeh, no painted/CG appearance. Text-only new generation; no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T04:41:14.964Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_068.png","dimensions":[1536,1024],"sha256":"fb8dcbf46a01019eb60d9038de295e59ac85aea76549cf44507f2d226a813b97","generation_id":"exec-ca8fc4de-8d81-4831-8e74-4b1cbb5609ce","accepted":true,"source_group":"exec-ca8fc4de-8d81-4831-8e74-4b1cbb5609ce","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_068","legacy_id":"bg_068","label":"Snowy Forest","name":"Snowy Forest","path":"generated_backgrounds/bg_068.png","raw_path":"sources/library/generated_backgrounds/bg_068.png","kind":"background","pair_id":"bg_068","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_068.webp","library_id":"gpt_bg_068","scene_family":"woodland","semantic_id":"bg_068","master_path":"sources/library/generated_backgrounds/bg_068.png","master_dimensions":[1536,1024],"master_sha256":"fb8dcbf46a01019eb60d9038de295e59ac85aea76549cf44507f2d226a813b97","original_path":"sources/library/generated_backgrounds/bg_068.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_068","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_068.png","input_dimensions":[512,512],"input_sha256":"8cc188bc1df06cceed31f539fa65f8f689c5d3e187f35285e0e1c55358e63557","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_071","family":"gpt","concept":"Pfälzer Forest 01","photo_match":"photo_phalzer_forest_01","photo_candidate_index":108,"photo_scene_description":"Free 18K unclipped HDRI of a pine forest with sandstone rocks - soft, low-contrast morning/afternoon natural light, cool green tones and dappled sun.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph of an ordinary real environment. Semantic scene reference in words: Free 18K unclipped HDRI of a pine forest with sandstone rocks - soft, low-contrast morning/afternoon natural light, cool green tones and dappled sun.. Use the environmental content and lighting described, ignoring publisher language such as free, HDRI, unclipped, resolution, or panoramic. Generate an independent ordinary rectilinear camera view of this kind of environment, NOT an HDRI, NOT 360 degrees or fisheye. Landscape 1536x1024 framing, realistic camera perspective, deep focus and natural materials. Keep the scene recognizable with plausible details specific to this environment. Include a modest clear foreground floor, ground or work surface for later controlled target placement, without letting an empty surface dominate the whole scene. Full realistic color, natural irregular arrangements and asymmetrical composition. No people, no text or logos, no watermark, no panels, no collage, no mirroring, no spherical projection or studio spheres, no extreme bokeh, no painted/CG appearance. Text-only new generation; no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T04:41:15.257Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_071.png","dimensions":[1536,1024],"sha256":"5272eee6736100a35d53b2c3062742afceaadb3a0bb730e4aa14e72d46ea7a53","generation_id":"exec-7ae4f3cb-c62b-4685-a5a6-289805129374","accepted":true,"source_group":"exec-7ae4f3cb-c62b-4685-a5a6-289805129374","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_071","legacy_id":"bg_071","label":"Pfälzer Forest 01","name":"Pfälzer Forest 01","path":"generated_backgrounds/bg_071.png","raw_path":"sources/library/generated_backgrounds/bg_071.png","kind":"background","pair_id":"bg_071","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_071.webp","library_id":"gpt_bg_071","scene_family":"woodland","semantic_id":"bg_071","master_path":"sources/library/generated_backgrounds/bg_071.png","master_dimensions":[1536,1024],"master_sha256":"5272eee6736100a35d53b2c3062742afceaadb3a0bb730e4aa14e72d46ea7a53","original_path":"sources/library/generated_backgrounds/bg_071.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_071","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_071.png","input_dimensions":[512,512],"input_sha256":"d613de95ae9a26474722381676ea1d200b928f6c2dc69559578c3d1f9b85e0c3","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_074","family":"gpt","concept":"Farm Road","photo_match":"photo_farm_road","photo_candidate_index":122,"photo_scene_description":"Free 24k unclipped HDRI of a rural dirt road under heavy overcast - soft, diffuse cool light, muted colors and broad, shadowless stratocumulus clouds creating a calm, moody atmosphere.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color close-up documentary photograph of the ground in a rural farm road: compacted grey-brown dirt with fine irregular gravel and subtle tire wear. Landscape 1536x1024. Camera positioned almost directly overhead, looking down approximately 85 degrees, showing a continuous physical ground patch roughly 1.5 metres wide, with natural detailed texture, deep sharp focus. This is a nearby object-placement background, not a broad scenic landscape. The center 80 percent is clear continuous local ground with no discrete large objects; no flowers or plants protruding into the center, no props, no balls, tools, furniture or animals. Retain full natural color and real small-scale material texture, minor irregularities and plausible diffuse daylight, avoid distracting dramatic shadows. Environmental identity is conveyed by the ground material and only subtle natural details at the very outer edges. No horizon, skyline, walls, distant scenery, buildings, humans or photographer shadow. No montage, mirroring, collage, labels, logos, watermark or CG look. A single independent text-only generation, no reference image.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T04:45:00.725Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_074.png","dimensions":[1536,1024],"sha256":"c9e905dd1e90db17c54bf8deb301f35c400ca3dfe950af4a1f14c485bc01fe41","generation_id":"exec-265253e3-d1d1-4cc8-84ee-660fe58f4c82","accepted":true,"source_group":"exec-265253e3-d1d1-4cc8-84ee-660fe58f4c82","placement_review_approved":true,"tasks":["T1","T2","T3","T4","T5"],"placement_roi_normalized":[0.1,0.1,0.9,0.9],"placement_note":"Visually reviewed clear near-overhead continuous support surface; ROI is [left,top,right,bottom] in original coordinates. Target scale, contact and composition require task rendering QA.","plan_id":"bg_074","legacy_id":"bg_074","label":"Farm Road","name":"Farm Road","path":"generated_backgrounds/bg_074.png","raw_path":"sources/library/generated_backgrounds/bg_074.png","kind":"background","pair_id":"bg_074","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T2","T3","T4","T5"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_074.webp","library_id":"gpt_bg_074","scene_family":"field","semantic_id":"bg_074","master_path":"sources/library/generated_backgrounds/bg_074.png","master_dimensions":[1536,1024],"master_sha256":"c9e905dd1e90db17c54bf8deb301f35c400ca3dfe950af4a1f14c485bc01fe41","original_path":"sources/library/generated_backgrounds/bg_074.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_074","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_074.png","input_dimensions":[512,512],"input_sha256":"f4bf7cb300cfad8028f72084c02cc71217f537d3a5b652a9f9c60ee1d3c1bd1a","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_079","family":"gpt","concept":"Wildflower Field","photo_match":"photo_wildflower_field","photo_candidate_index":144,"photo_scene_description":"Unclipped, free 24K HDRI. Soft, low-contrast sunrise light over a rural wildflower field, clear sky, gentle warm rim light and long soft shadows.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color close-up documentary photograph of the ground in a wildflower field: short green grasses with a few tiny wildflowers only at the outer edges. Landscape 1536x1024. Camera positioned almost directly overhead, looking down approximately 85 degrees, showing a continuous physical ground patch roughly 1.5 metres wide, with natural detailed texture, deep sharp focus. This is a nearby object-placement background, not a broad scenic landscape. The center 80 percent is clear continuous local ground with no discrete large objects; no flowers or plants protruding into the center, no props, no balls, tools, furniture or animals. Retain full natural color and real small-scale material texture, minor irregularities and plausible diffuse daylight, avoid distracting dramatic shadows. Environmental identity is conveyed by the ground material and only subtle natural details at the very outer edges. No horizon, skyline, walls, distant scenery, buildings, humans or photographer shadow. No montage, mirroring, collage, labels, logos, watermark or CG look. A single independent text-only generation, no reference image.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T04:54:59.356Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_079.png","dimensions":[1536,1024],"sha256":"de5247148a693a5cd5d6a45d21f008f366070d491e0be6b49fc1784989a11ddf","generation_id":"exec-4c24f8da-c51a-48f1-85aa-1de3b08aaabb","accepted":true,"source_group":"exec-4c24f8da-c51a-48f1-85aa-1de3b08aaabb","placement_review_approved":true,"tasks":["T1","T2","T3","T4","T5"],"placement_roi_normalized":[0.1,0.1,0.9,0.9],"placement_note":"Visually reviewed clear near-overhead continuous support surface; ROI is [left,top,right,bottom] in original coordinates. Target scale, contact and composition require task rendering QA.","plan_id":"bg_079","legacy_id":"bg_079","label":"Wildflower Field","name":"Wildflower Field","path":"generated_backgrounds/bg_079.png","raw_path":"sources/library/generated_backgrounds/bg_079.png","kind":"background","pair_id":"bg_079","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T2","T3","T4","T5"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_079.webp","library_id":"gpt_bg_079","scene_family":"field","semantic_id":"bg_079","master_path":"sources/library/generated_backgrounds/bg_079.png","master_dimensions":[1536,1024],"master_sha256":"de5247148a693a5cd5d6a45d21f008f366070d491e0be6b49fc1784989a11ddf","original_path":"sources/library/generated_backgrounds/bg_079.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_079","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_079.png","input_dimensions":[512,512],"input_sha256":"1ac9aa67b358cc7b949ee1accca6b90d0fcfe50c2ec2edf4669a411e87e95c53","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_081","family":"gpt","concept":"Citrus Orchard Road","photo_match":"photo_citrus_orchard_road","photo_candidate_index":147,"photo_scene_description":"Free 20K unclipped HDRI, soft low-contrast sunrise over a citrus orchard dirt road; warm horizon glow, cool partly-cloudy sky and diffuse natural light.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph of an ordinary real environment. Semantic scene reference in words: Free 20K unclipped HDRI, soft low-contrast sunrise over a citrus orchard dirt road; warm horizon glow, cool partly-cloudy sky and diffuse natural light.. Use the environmental content and lighting described, ignoring publisher language such as free, HDRI, unclipped, resolution, or panoramic. Generate an independent ordinary rectilinear camera view of this kind of environment, NOT an HDRI, NOT 360 degrees or fisheye. Landscape 1536x1024 framing, realistic camera perspective, deep focus and natural materials. Keep the scene recognizable with plausible details specific to this environment. Include a modest clear foreground floor, ground or work surface for later controlled target placement, without letting an empty surface dominate the whole scene. Full realistic color, natural irregular arrangements and asymmetrical composition. No people, no text or logos, no watermark, no panels, no collage, no mirroring, no spherical projection or studio spheres, no extreme bokeh, no painted/CG appearance. Text-only new generation; no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T05:09:44.878Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_081.png","dimensions":[1536,1024],"sha256":"2e089e2c9784e6fad26324d319bba771c886485089869e9e413a415a5c51a6c5","generation_id":"exec-e8b99cc8-e2a3-4163-9c66-72a8fe6c0b60","accepted":true,"source_group":"exec-e8b99cc8-e2a3-4163-9c66-72a8fe6c0b60","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_081","legacy_id":"bg_081","label":"Citrus Orchard Road","name":"Citrus Orchard Road","path":"generated_backgrounds/bg_081.png","raw_path":"sources/library/generated_backgrounds/bg_081.png","kind":"background","pair_id":"bg_081","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_081.webp","library_id":"gpt_bg_081","scene_family":"field","semantic_id":"bg_081","master_path":"sources/library/generated_backgrounds/bg_081.png","master_dimensions":[1536,1024],"master_sha256":"2e089e2c9784e6fad26324d319bba771c886485089869e9e413a415a5c51a6c5","original_path":"sources/library/generated_backgrounds/bg_081.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_081","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_081.png","input_dimensions":[512,512],"input_sha256":"c1a1a5fffa9b1103513efd11a931eb242092ca2ece8b1e31a18f38870ed83408","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_085","family":"gpt","concept":"Pine Picnic","photo_match":"photo_pine_picnic","photo_candidate_index":160,"photo_scene_description":"Unclipped, free 24K HDRI with soft midday overcast light, low-contrast natural diffuse illumination in a pine park with grassy lawns, gazebos and braai shelters.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color close-up documentary photograph of the ground in a pine picnic park: natural short grass with a few pine needles and small dry leaves at the edges. Landscape 1536x1024. Camera positioned almost directly overhead, looking down approximately 85 degrees, showing a continuous physical ground patch roughly 1.5 metres wide, with natural detailed texture, deep sharp focus. This is a nearby object-placement background, not a broad scenic landscape. The center 80 percent is clear continuous local ground with no discrete large objects; no flowers or plants protruding into the center, no props, no balls, tools, furniture or animals. Retain full natural color and real small-scale material texture, minor irregularities and plausible diffuse daylight, avoid distracting dramatic shadows. Environmental identity is conveyed by the ground material and only subtle natural details at the very outer edges. No horizon, skyline, walls, distant scenery, buildings, humans or photographer shadow. No montage, mirroring, collage, labels, logos, watermark or CG look. A single independent text-only generation, no reference image.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T05:16:05.718Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_085.png","dimensions":[1536,1024],"sha256":"372c495adb04f0da7791a483688983e9bc0356ff11fa1d8e0b1ccc62d461f20e","generation_id":"exec-b9ebee6b-d77c-4938-b0f1-1f6ceafea67b","accepted":true,"source_group":"exec-b9ebee6b-d77c-4938-b0f1-1f6ceafea67b","placement_review_approved":true,"tasks":["T1","T2","T3","T4","T5"],"placement_roi_normalized":[0.1,0.1,0.9,0.9],"placement_note":"Visually reviewed clear near-overhead continuous support surface; ROI is [left,top,right,bottom] in original coordinates. Target scale, contact and composition require task rendering QA.","plan_id":"bg_085","legacy_id":"bg_085","label":"Pine Picnic","name":"Pine Picnic","path":"generated_backgrounds/bg_085.png","raw_path":"sources/library/generated_backgrounds/bg_085.png","kind":"background","pair_id":"bg_085","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T2","T3","T4","T5"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_085.webp","library_id":"gpt_bg_085","scene_family":"garden","semantic_id":"bg_085","master_path":"sources/library/generated_backgrounds/bg_085.png","master_dimensions":[1536,1024],"master_sha256":"372c495adb04f0da7791a483688983e9bc0356ff11fa1d8e0b1ccc62d461f20e","original_path":"sources/library/generated_backgrounds/bg_085.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_085","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_085.png","input_dimensions":[512,512],"input_sha256":"0bd350b6e563ecae7757f3b1b63a4b04c71c11af6f3dfc4d85fd970702113500","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_087","family":"gpt","concept":"Netball Court","photo_match":"photo_netball_court","photo_candidate_index":168,"photo_scene_description":"Unclipped, free 20K HDRI of a netball court at soft sunrise/sunset - clear sky, low-contrast cool light with gentle long shadows, fencing and trees.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color close-up documentary photograph of the ground in an outdoor netball court: muted blue-green finely gritty painted hardcourt surface with a thin worn white line entering only the far lower-right corner. Landscape 1536x1024. Camera positioned almost directly overhead, looking down approximately 85 degrees, showing a continuous physical ground patch roughly 1.5 metres wide, with natural detailed texture, deep sharp focus. This is a nearby object-placement background, not a broad scenic landscape. The center 80 percent is clear continuous local ground with no discrete large objects; no flowers or plants protruding into the center, no props, no balls, tools, furniture or animals. Retain full natural color and real small-scale material texture, minor irregularities and plausible diffuse daylight, avoid distracting dramatic shadows. Environmental identity is conveyed by the ground material and only subtle natural details at the very outer edges. No horizon, skyline, walls, distant scenery, buildings, humans or photographer shadow. No montage, mirroring, collage, labels, logos, watermark or CG look. A single independent text-only generation, no reference image.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T05:16:05.890Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_087.png","dimensions":[1536,1024],"sha256":"3511aef79ab426d8c70dd2d0d65bae96df62a6db3e5691e3b16b895782bcadcf","generation_id":"exec-9cee04f6-03e4-4652-b5ff-b511ea8bccfd","accepted":true,"source_group":"exec-9cee04f6-03e4-4652-b5ff-b511ea8bccfd","placement_review_approved":true,"tasks":["T1","T2","T3","T4","T5"],"placement_roi_normalized":[0.1,0.1,0.9,0.9],"placement_note":"Visually reviewed clear near-overhead continuous support surface; ROI is [left,top,right,bottom] in original coordinates. Target scale, contact and composition require task rendering QA.","plan_id":"bg_087","legacy_id":"bg_087","label":"Netball Court","name":"Netball Court","path":"generated_backgrounds/bg_087.png","raw_path":"sources/library/generated_backgrounds/bg_087.png","kind":"background","pair_id":"bg_087","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T2","T3","T4","T5"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_087.webp","library_id":"gpt_bg_087","scene_family":"garden","semantic_id":"bg_087","master_path":"sources/library/generated_backgrounds/bg_087.png","master_dimensions":[1536,1024],"master_sha256":"3511aef79ab426d8c70dd2d0d65bae96df62a6db3e5691e3b16b895782bcadcf","original_path":"sources/library/generated_backgrounds/bg_087.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_087","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_087.png","input_dimensions":[512,512],"input_sha256":"ed62061a7580ccc2e72047d941adb21bb94e84559f7b2cef3584ab9719e37e2e","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_091","family":"gpt","concept":"outdoor basketball court","photo_match":"photo_sports_court","provenance":"gpt","source_path":"sources/library/generated_backgrounds/bg_091.png","dimensions":[1536,1024],"sha256":"ceade3ee2696f9023384bc2e552e0984509d35ee35aec2ba934459f96826cdb5","full_prompt":"Use case: photorealistic-natural. Generate ONE realistic high-resolution close-up photograph of the painted ground of an outdoor basketball court, landscape 3:2. Camera almost directly overhead, very close to the floor, showing only an approximately 1.5 meter wide by 1 meter deep patch of physical ground. This is a close tabletop-scale view suitable for compositing a few normal basketballs later, NOT an aerial photo of a complete court. Frame filled with worn muted green sports-court paint with visible fine gritty concrete and natural small scuffs. A single off-white painted sideline about 5 centimeters wide runs diagonally across the lower right corner, with a small triangle of faded brick-red court paint beyond it; the white paint line should occupy about 3 percent of the image width. Upper and middle 80 percent is uninterrupted green textured floor. Soft overcast daylight, deep focus, no motion blur. No balls, no people, no hoop, no fence, no horizon, no shrubs, no tree shadows, no text, no logo, no collage. Preserve realistic full color and medium contrast. Whole image is this one nearby ground patch.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","source_group":"gpt_sports_floor_closeup","generation_id":null,"generation_time":null,"new_call_this_stage":false,"tasks":["T1","T2","T3","T4","T5"],"placement_note":"Visually reviewed clear near-overhead continuous support surface; ROI is [left,top,right,bottom] in original coordinates. Target scale, contact and composition require task rendering QA.","accepted":true,"placement_review_approved":true,"placement_roi_normalized":[0.05,0.05,0.87,0.72],"plan_id":"bg_091","legacy_id":"bg_091","label":"outdoor basketball court","name":"outdoor basketball court","path":"generated_backgrounds/bg_091.png","raw_path":"sources/library/generated_backgrounds/bg_091.png","kind":"background","pair_id":"bg_091","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T2","T3","T4","T5"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_091.webp","library_id":"gpt_bg_091","scene_family":"sports","semantic_id":"bg_091","master_path":"sources/library/generated_backgrounds/bg_091.png","master_dimensions":[1536,1024],"master_sha256":"ceade3ee2696f9023384bc2e552e0984509d35ee35aec2ba934459f96826cdb5","original_path":"sources/library/generated_backgrounds/bg_091.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_091","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_091.png","input_dimensions":[512,512],"input_sha256":"a8198d8b19bbe9b1e13d9bcf3c7898b9ae7113edab9a055c34e23afad70e2846","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_098","family":"gpt","concept":"Small Harbour Morning","photo_match":"photo_small_harbour_morning","photo_candidate_index":218,"photo_scene_description":"Free 24K HDRI, unclipped - clear high-contrast morning at a small harbour: bright sun, calm lake reflections, dock and boats, crisp natural outdoor light.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color documentary photograph of an ordinary real environment. Semantic scene reference in words: Free 24K HDRI, unclipped - clear high-contrast morning at a small harbour: bright sun, calm lake reflections, dock and boats, crisp natural outdoor light.. Use the environmental content and lighting described, ignoring publisher language such as free, HDRI, unclipped, resolution, or panoramic. Generate an independent ordinary rectilinear camera view of this kind of environment, NOT an HDRI, NOT 360 degrees or fisheye. Landscape 1536x1024 framing, realistic camera perspective, deep focus and natural materials. Keep the scene recognizable with plausible details specific to this environment. Include a modest clear foreground floor, ground or work surface for later controlled target placement, without letting an empty surface dominate the whole scene. Full realistic color, natural irregular arrangements and asymmetrical composition. No people, no text or logos, no watermark, no panels, no collage, no mirroring, no spherical projection or studio spheres, no extreme bokeh, no painted/CG appearance. Text-only new generation; no reference images.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T05:21:25.377Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_098.png","dimensions":[1536,1024],"sha256":"4e093561261c75be1a1972e3a38a4d2810c2f0d4f7482a326a69571744d36fbc","generation_id":"exec-457e1743-ed30-476d-9047-954638fed5a8","accepted":true,"source_group":"exec-457e1743-ed30-476d-9047-954638fed5a8","placement_review_approved":false,"tasks":["T1","T2","T3","T4","T5"],"plan_id":"bg_098","legacy_id":"bg_098","label":"Small Harbour Morning","name":"Small Harbour Morning","path":"generated_backgrounds/bg_098.png","raw_path":"sources/library/generated_backgrounds/bg_098.png","kind":"background","pair_id":"bg_098","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T4"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_098.webp","library_id":"gpt_bg_098","scene_family":"coast","semantic_id":"bg_098","master_path":"sources/library/generated_backgrounds/bg_098.png","master_dimensions":[1536,1024],"master_sha256":"4e093561261c75be1a1972e3a38a4d2810c2f0d4f7482a326a69571744d36fbc","original_path":"sources/library/generated_backgrounds/bg_098.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_098","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_098.png","input_dimensions":[512,512],"input_sha256":"ef1d04c6b0936d2dbf08c65fae76db80287ba7140c8f7858a67b5d5ac0370f1f","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}},{"id":"gpt_bg_100","family":"gpt","concept":"Dry Cracked Lake","photo_match":"photo_dry_cracked_lake","photo_candidate_index":250,"photo_scene_description":"Unclipped, free 24K HDRI with bright sun, high-contrast morning/afternoon light, partly cloudy sky and crisp shadows across a cracked dry lakebed with trees.","provenance":"gpt","full_prompt":"Use case: photorealistic-natural. Create ONE new high-quality full-color close-up documentary photograph of the ground in a dry lakebed: irregular polygonal brown cracked mud, realistic small cracks and distinct natural earth tones. Landscape 1536x1024. Camera positioned almost directly overhead, looking down approximately 85 degrees, showing a continuous physical ground patch roughly 1.5 metres wide, with natural detailed texture, deep sharp focus. This is a nearby object-placement background, not a broad scenic landscape. The center 80 percent is clear continuous local ground with no discrete large objects; no flowers or plants protruding into the center, no props, no balls, tools, furniture or animals. Retain full natural color and real small-scale material texture, minor irregularities and plausible diffuse daylight, avoid distracting dramatic shadows. Environmental identity is conveyed by the ground material and only subtle natural details at the very outer edges. No horizon, skyline, walls, distant scenery, buildings, humans or photographer shadow. No montage, mirroring, collage, labels, logos, watermark or CG look. A single independent text-only generation, no reference image.","tool_model":"not_exposed","generation_method":"text-only built-in image_gen","generation_time":"2026-10-13T05:21:25.585Z","new_call_this_stage":true,"source_path":"sources/library/generated_backgrounds/bg_100.png","dimensions":[1536,1024],"sha256":"bcdc11b289a54209139765d7a27d9af8d5ae5d69ef5d30d5a236b2853746db4a","generation_id":"exec-4daaefbd-4bff-43fb-a0bd-1db302e6829e","accepted":true,"source_group":"exec-4daaefbd-4bff-43fb-a0bd-1db302e6829e","placement_review_approved":true,"tasks":["T1","T2","T3","T4","T5"],"placement_roi_normalized":[0.1,0.1,0.9,0.9],"placement_note":"Visually reviewed clear near-overhead continuous support surface; ROI is [left,top,right,bottom] in original coordinates. Target scale, contact and composition require task rendering QA.","plan_id":"bg_100","legacy_id":"bg_100","label":"Dry Cracked Lake","name":"Dry Cracked Lake","path":"generated_backgrounds/bg_100.png","raw_path":"sources/library/generated_backgrounds/bg_100.png","kind":"background","pair_id":"bg_100","pairing":"Semantic scene category only; independent image composition, lighting and geometry.","processor_input":"not measured; 512 is the stimulus canvas, not a model processor claim","placement_candidate_tasks":["T1","T2","T3","T4","T5"],"default_review_view":"full source scene","task_eligibility_note":"Shared source scene for controlled foreground compositing. Full scene is default; near-overhead placement view is an explicit alternative where retained. Background context and local visibility are reported per combination.","source_dimensions":[1536,1024],"candidate_tasks":["T1","T2","T3","T4","T5"],"task_pair_policy":"Each default task uses the intersection of the photographic and generated counterpart eligibility. Individual candidate_tasks remain recorded; unmatched suitability does not inflate the paired review pool.","preview_path":"/samples/library/media/previews/gpt_bg_100.webp","library_id":"gpt_bg_100","scene_family":"desert","semantic_id":"bg_100","master_path":"sources/library/generated_backgrounds/bg_100.png","master_dimensions":[1536,1024],"master_sha256":"bcdc11b289a54209139765d7a27d9af8d5ae5d69ef5d30d5a236b2853746db4a","original_path":"sources/library/generated_backgrounds/bg_100.png","generated":true,"split":"development","split_note":"Existing shared-library source reused for stimulus review; no new capture or held-out evaluation.","transform":{"shared_source_transform":null,"shared_source_id":"gpt_bg_100","operation":"reuse existing shared source; no source pixel edits"},"input_path":"sources/inputs/gpt_bg_100.png","input_dimensions":[512,512],"input_sha256":"0deab5f1cb90e1c1943584eedd5ec3292a52e20b120b29a4b7d9602d6e178ddb","input_transform":{"operation":"center square crop then isotropic Lanczos resize","source_dimensions":[1536,1024],"output_dimensions":[512,512],"crop":[256,0,1280,1024],"pad":null,"stretch":false}}],"counts":{"photo":50,"gpt":50}}