Summary

• Pixel functional layer: multichannel cv2.LUT for per-channel tone curves and histogram-derived LUTs on medium/large uint8 images, replacing Python per-channel loops.
• Touches Equalize, AutoContrast, and RandomToneCurve via the shared apply_multichannel_lut helper when preconditions match.
• Dithering: ordered uint8 path can take a vectorized fast route when image size/channel count pass internal guards.
• Dependency: albucore 0.1.5 → 0.1.6 (declared in pyproject.toml / uv.lock; conda recipe aligned).
• New regression tests for histogram/LUT and dithering paths (tests/functional/test_functional.py, tests/test_dithering.py).

Breaking changes

None.

New features

None.

Bug fixes

None.

Misc

• conda.recipe/meta.yaml and uv.lock updated alongside the version and albucore pin.
• Internal: apply_multichannel_lut in _functional_shared.py centralizes contiguous multichannel LUT application for (H,W,C), batch, and volume layouts.

Commits