Hybrid matching combines text recognition with CLIP similarity:
- If reference logo has text and detection matches: lower CLIP threshold
- If reference has text but detection doesn't match: higher threshold
- If reference has no text: standard threshold
Image preprocessing adds letterbox/stretch modes for CLIP input to
preserve aspect ratio instead of center cropping.
New files:
- run_hybrid_test.sh: Test hybrid matching configurations
- run_preprocess_test.sh: Compare preprocessing modes
Changes to logo_detection_detr.py:
- Add preprocess_mode parameter (default/letterbox/stretch)
- Add set_text_detector() for hybrid matching
- Add extract_text() using EasyOCR
- Add compute_text_similarity() with fuzzy matching
- Add find_best_match_hybrid() with tiered thresholds
Changes to test_logo_detection.py:
- Add --matching-method hybrid option
- Add --preprocess-mode option
- Add hybrid threshold arguments
