- Use letterbox resize (preserve aspect ratio + pad) instead of stretching
to 320x320. Stretching 16:9 frames caused faces to be undetectable.
- Auto-detect score tensor output index at init time (name + variance heuristic)
- Smart upper-body crop: roughly square region instead of thin wide strip
- Throttle face detection to every 2s to reduce Coral USB traffic
- Skip crops smaller than 80px (too small for reliable detection)
- Reduce log level from DEBUG to INFO
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
