{
  "schema": 1,
  "asset_role": "Study Commons Daily Read hero",
  "slug": "how-shadows-change-during-day",
  "generator": "QwenImage21Pipeline",
  "diffusers_version": "0.37.0.dev0",
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  "model_index_sha256": "cf1ecd104ea090855d60d8cec0895c1e9d6ee41b2f87e231b678beecd1cf7809",
  "scheduler": "FlowMatchEulerDiscreteScheduler",
  "torch_dtype": "bfloat16",
  "profile": "cinematic",
  "prompt": "Wide 16:9 premium photorealistic educational science illustration about how a fixed object’s shadow changes through one day. Make THREE clearly separated but borderless time slices arranged left-to-right, all showing the same simple vertical white post on flat pavement from the same low camera viewpoint; no text anywhere. LEFT MORNING SLICE: one small visible Sun is low in the upper-left sky; sunlight comes from upper-left and the post casts ONE very long crisp shadow diagonally toward the lower-right. CENTER MIDDAY SLICE: one small Sun is high near the top-center; the post casts ONE very short compact shadow close to its base, slightly toward the camera. RIGHT LATE-AFTERNOON SLICE: one small visible Sun is low in the upper-right sky; sunlight comes from upper-right and the post casts ONE very long crisp shadow diagonally toward the lower-left. The left and right shadows MUST point in opposite directions. Same post height and shape in all three slices. Keep horizon and pavement simple, natural restrained colour, cooler morning, neutral noon, warmer afternoon, premium science-magazine photography, uncluttered, no people, no labels, no arrows, no clocks.",
  "negative_prompt": "text, words, letters, labels, captions, arrows, infographic, chart, clock face, numbers, people, child, distorted post, leaning post, multiple posts within one moment, inconsistent post height, impossible shadow direction, shadow pointing toward light source, duplicate shadow in one moment, floating objects, buildings dominating scene, fantasy, neon colors, cartoon, anime, watermark, logo, UI, poster",
  "seed": 2026100207,
  "num_inference_steps": 20,
  "true_cfg_scale": 4.0,
  "lora": [
    {
      "name": "Lenovo UltraReal",
      "local_path": "loras/qwen21_lenovo_diffusers/lenovo_qwen21_diffusers.safetensors",
      "sha256": "d730587495418000fd801017137d1c2b73fade2cf4beb648282a8bb000cfe654",
      "weight": 0.65,
      "adapter_name": "lenovo"
    }
  ],
  "reference_images": [],
  "gpu": "NVIDIA GeForce RTX 4090",
  "generated_at": "2026-10-02T07:50:38-04:00",
  "output_png": "candidate-02.png",
  "output_png_sha256": "c52ed31d5ad1667dff43a550d0446efe1fcb3fb16f47e48269d8aaf4a5b43eb0",
  "generation_seconds": 38.885,
  "provenance_note": "Generation parameters and cryptographic hashes retained by Study Commons for reproducibility and provenance. AI generation does not itself guarantee absence of third-party rights.",
  "requested_width": 1280,
  "requested_height": 720,
  "actual_width": 1280,
  "actual_height": 704,
  "width": 1280,
  "height": 704,
  "postprocess": {
    "format": "AVIF",
    "encoder": "ffmpeg libaom-av1",
    "crf": 1,
    "cpu_used": 6,
    "pix_fmt": "yuv420p",
    "source_png_sha256": "c52ed31d5ad1667dff43a550d0446efe1fcb3fb16f47e48269d8aaf4a5b43eb0"
  }
}