Fit the background brightness from the photo border and subtract it, so side-lit photos threshold cleanly. The clicked pixel (or, without a click, the border) decides whether the piece is darker or lighter, replacing the invert checkbox. Adds the MDF-on-wood-floor photo as a regression fixture. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
190 KiB
2000x1500px
190 KiB
2000x1500px