Brandon ThomasandClaude Opus 5.5 71182b6631 Pictures: black and white, inverted alpha, and PowerPoint's grey weights ...

- a:biLevel (Color > Black and White) was ignored. It is now read, written
  and drawn: white where the luminance reaches the threshold, else black
  (observed thresholds at 30/50/70% on colour swatches).
- a:alphaInv was ignored; an opaque picture with it is invisible in
  PowerPoint. Now read, written and drawn.
- Grayscale, duotone and saturation weighed channels 0.299/0.587/0.114;
  PowerPoint's export greys pure red to 54 and green to 182: Rec. 709
  weights (0.2126/0.7152/0.0722).

Wild synthetic set: recolour slide 7.60 -> 1.15, picture corrections
13.36 -> 7.36.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

2026-10-13 08:14:09 -04:00

..

src

Pictures: black and white, inverted alpha, and PowerPoint's grey weights

2026-10-13 08:14:09 -04:00

Cargo.toml

Text: Ctrl+arrows, Ctrl+Backspace/Delete and other text keys work like PowerPoint (#268) (#333)

2026-10-12 22:09:50 -04:00