| { |
| "id": "single-software-execution--cli--blender--task-12--ubuntu", |
| "snapshot": "Blender-4.2.3", |
| "instruction": "Three-Point Studio Lighting `/home/user/Desktop/character.blend` contains a simple humanoid stand-in at the origin built from primitives (cube torso, UV-sphere head, cylinder arms and legs) on a dark ground plane. Launch Blender by running `blender` from a terminal. Before starting the work, use `/opt/blender/blender` for Blender command-line or background runs when working on `character.blend`.\n\nA Camera is set at (0, -3, 1.0) aimed at (0, 0, 1.0) and the render settings are Cycles, 512x512, 64 samples, denoise ON, view_transform='Standard'. Only a single weak ambient AREA light exists in the scene -- the scene is intentionally too dim to pass the checks. Your job is to add a proper three-point lighting rig and render a 512x512 RGBA beauty pass. ## Task 1. Use the initial scene at `/home/user/Desktop/character.blend`. 2. Remove any pre-existing weak/ambient light. 3. Add three AREA lights following the classic three-point convention: Key -- the main, brightest light. Place it on the camera-right side at a strong angle so the right side of the subject is clearly brighter than the left. Point the light at the subject's torso center. Fill -- opposite side of the key, much dimmer than the key. Aim it at the torso center. Rim -- behind and above the subject so it grazes the top of the head and shoulders back toward the camera. Aim it at the torso center. Each light must be an AREA light with square shape and must be aimed at the subject. 4. Name the three lights or their data-blocks `Key`, `Fill`, and `Rim`. 5. Render a 512x512 RGBA PNG to `beauty.png` directly on the Desktop, using the Standard view transform. 6. Save the .blend to `/home/user/Desktop/answer.blend`. ## Requirements 1. `/home/user/Desktop/answer.blend` exists and opens. 2. The saved scene has at least 3 AREA lights (objects with `type=='LIGHT'` whose `data.type=='AREA'`). 3. A 512x512 RGBA PNG is present at `beauty.png` (directly on the Desktop). 4. A subject mask built from pixels whose luma exceeds the background-strip luma by more than 0.10 produces a non-trivial subject. Within that mask, the brighter of (left-half mean, right-half mean) -- the \"key side\" -- must fall in [0.45, 0.85], and the dimmer side -- the \"fill side\" -- must be at least 0.08 below the key side (BT.601 luma: `0.299*R + 0.587*G + 0.114*B`). 5. Rim check: a thin band near the top of the head (image coords x in [215, 300], y in [405, 440]) has mean luma at least 0.04 greater than a band just below it (same x, y in [440, 475]). This demonstrates that a rim light from above/behind is catching the top of the subject's silhouette more than the under-chin area.", |
| "source": "https://docs.blender.org/manual/en/4.1/; https://docs.blender.org/api/4.1/; https://www.loc.gov/preservation/digital/formats/fdd/fdd000507.shtml", |
| "config": [ |
| { |
| "type": "upload_file", |
| "parameters": { |
| "files": [ |
| { |
| "local_path": "task-12/init_file/character.blend", |
| "path": "/home/user/Desktop/character.blend" |
| } |
| ] |
| } |
| } |
| ], |
| "trajectory": "trajectories/", |
| "related_apps": [ |
| "blender" |
| ], |
| "artifact_paths": [ |
| "/home/user/Desktop/answer.blend", |
| "/home/user/Desktop/beauty.png" |
| ], |
| "evaluator": { |
| "postconfig": [ |
| { |
| "type": "upload_file", |
| "parameters": { |
| "files": [ |
| { |
| "local_path": "task-12/eval.py", |
| "path": "/home/user/Desktop/eval.py" |
| } |
| ] |
| } |
| } |
| ], |
| "func": "exact_match", |
| "result": { |
| "type": "vm_command_line", |
| "command": "python3 /home/user/Desktop/eval.py", |
| "shell": "true" |
| }, |
| "expected": { |
| "type": "rule", |
| "rules": { |
| "expected": "True\n" |
| } |
| } |
| }, |
| "proxy": false, |
| "fixed_ip": false, |
| "possibility_of_env_change": "low" |
| } |
|
|
