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reference-look-calibration

reference-look-calibration

github.com/roble3Creative & media128854 installsUpdated 2w ago
Repository

About reference-look-calibration

reference-look-calibration is a creative skill for matching a render’s appearance after geometry and UVs are fixed. It measures object masks, color, brightness, and related metrics, then guides camera, material, lighting, and color adjustments.

Key features

  1. 01Compares object masks and bounding boxes
  2. 02Measures color, brightness, and saturation
  3. 03Calibrates camera framing before color
  4. 04Tunes materials, emission, and background
  5. 05Writes before-and-after look metrics

Use cases

  1. 01Match a product preview to reference images
  2. 02Calibrate glow and accent colors
  3. 03Verify appearance after geometry and UV checks

Install

Copy the command and run it in a terminal.

$npx skills add https://github.com/roble3/cc-blender-skill --skill reference-look-calibration

After installing, type/reference-look-calibrationin Claude Code to confirm it loaded.

Bundled filesscripts/look_fit_report.py

Details

From the project README

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.

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