vangel76andClaude Opus 5.5 dc9f15ada1 Brightness & Contrast: negative settings invert the positive curves, as After Effects ...

In After Effects 2026 the non-legacy curve of Brightness -40 is the inverse
of Brightness +40 (within 2.6/255 on a full black-to-white ramp) and Contrast
-50 the inverse of Contrast +50. EffectCraft fitted the negative brightness
with its own power (2^(1.32 |b|) on v), 20/255 off AE at -40; the negatives
now use the reciprocal exponents of the positive curves: Brightness -40 max
6.2/255 (was 19.8), Contrast -50 4.1 (was 7.0); positives unchanged (40:
5.5, 80: 7.8, Contrast 50: 2.7, 90: 5.0; B20 C30: 6.6, which confirms
brightness before contrast). The #681 oracle samples still pass. CPU and GPU.
The positive curves' remaining 5-8/255 needs a better curve family (a
two-point spline fits each capture within 1.6/255), left open.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

2026-10-19 16:15:02 +02:00

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src

Brightness & Contrast: negative settings invert the positive curves, as After Effects

2026-10-19 16:15:02 +02:00

tests

Effects: re-pin CC Particle World / Systems II golden hashes

2026-10-12 19:18:53 +01:00

Cargo.toml

M13.35: Roto Brush trained model — swappable segment module, MobileSAM in pure Rust

2026-10-05 17:55:02 +07:00