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Brandon ThomasandClaude Opus 5.5 8c1c7282b2 LR-MASK-BRUSH + LR-MASK-SLIDERS: Auto Mask brush and local Noise / Moiré / Defringe on CPU and GPU
Auto Mask strokes weight each dab by similarity (log luminance + chromaticity) to the pixel under
its centre and are refined by a cross guided filter on log luminance (max-combined, never removing
paint). Local Noise smooths small-amplitude luminance detail (negative boosts it) and calms colour
noise; Moiré blends chromaticity towards a blurred plane (appended to the GPU mask buffer);
Defringe desaturates purple/green casts on edges. Pixel tests per slider and for the edge
constraint, CPU/GPU equivalence cases, Auto Mask checkbox and Moiré/Defringe sliders in the panel.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-01 13:09:14 -04:00
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