---name: reference-look-calibrationdescription: Calibrate Blender materials, lighting, camera crop, emission/glow, color management, and aura/HUD styling against supplied original/reference images using measurable color, brightness, saturation, bbox, and mask statistics. Use when a product must match the lighting/look of a source image or when audits say the product is too bright, desaturated, wrong hue, wrong glow, or wrong silhouette extent.when_to_use: Reference-based look-dev, lighting/material/color calibration, original-image visual matching, glow/aura/HUD matching, HSV/brightness/mask fit reports, final look pass after geometry and UV are locked.allowed-tools: Read Bash Glob Grep mcp__blender__execute_blender_code mcp__blender__get_scene_info mcp__blender__get_object_info---

Reference Look Calibration

This skill handles the final visual match after geometry and UVs are locked. It must not compensate for wrong shape, wrong UVs, or wrong camera framing.

Inputs

• accepted geometry / UV fit reports;
• reference/original image(s);
• product preview render(s);
• optional mask overlays and multiview fit reports.

Metrics

Use scripts/look_fit_report.py to compare:

• object/bright-mask IoU and bbox extent;
• configured hue-band mask IoU for glow/accent assets;
• mean/std HSV and BGR under object mask;
• brightness p95 / mean;
• saturation mean;
• hue drift.

Calibration order

1. Camera crop / orthographic scale — object extent must match before color tuning.
2. World/background darkness.
3. Base material hue/value/saturation.
4. Emission strength and glow color.
5. Aura/HUD ring color and thickness.
6. Color management / exposure / gamma.
7. Final render overlay and metrics.

Hard rules

• Do not tune lighting before geometry/UV fit gates pass.
• Do not change accent/glow hue away from the source reference unless the user explicitly asks.
• Do not hide mismatched geometry with bloom, fog, or overexposure.
• Write look metrics before and after calibration.

Handoff

Consumes validation/multiview_fit_report*.json and product previews. Produces validation/look_fit_report.json, look overlays, and updated material/light/render settings.