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Eric Gullickson 0de34983bb
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fix: use best-contrast color channel for VIN preprocessing (refs #113) 
White text on green VIN stickers has only ~12% contrast in standard
grayscale conversion because the green channel dominates luminance.
The new _best_contrast_channel method evaluates each RGB channel's
standard deviation and selects the one with highest contrast, giving
~2x improvement for green-tinted VIN stickers. Falls back to standard
grayscale for neutral-colored images.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-06 21:14:56 -06:00
..
app
fix: use best-contrast color channel for VIN preprocessing (refs #113)
2026-02-06 21:14:56 -06:00
tests
fix: resolve VIN OCR scanning failures on all images (refs #113)
2026-02-06 15:57:14 -06:00
CLAUDE.md
chore: update docs
2026-02-05 21:49:35 -06:00
Dockerfile
chore: upgrade OCR base image from python 3.11-slim to 3.13-slim (refs #100)
2026-02-05 20:00:40 -06:00
requirements.txt
feat: add owner's manual OCR pipeline (refs #71)
2026-02-01 21:30:20 -06:00