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feat: add VIN photo OCR pipeline (refs #67)
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Implement VIN-specific OCR extraction with optimized preprocessing:

- Add POST /extract/vin endpoint for VIN extraction
- VIN preprocessor: CLAHE, deskew, denoise, adaptive threshold
- VIN validator: check digit validation, OCR error correction (I->1, O->0)
- VIN extractor: PSM modes 6/7/8, character whitelist, alternatives
- Response includes confidence, bounding box, and alternatives
- Unit tests for validator and preprocessor
- Integration tests for VIN extraction endpoint

Co-Authored-By: Claude Opus 4.5 <[email protected]>
This commit is contained in:
Eric Gullickson
2026-02-01 19:31:36 -06:00
co-authored by Claude Opus 4.5
parent 004940b013
commit 54cbd49171
14 changed files with 1694 additions and 1 deletions
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ocr/app/preprocessors/__init__.py
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"""Image preprocessors for OCR optimization."""
from app.services.preprocessor import ImagePreprocessor, preprocessor
from app.preprocessors.vin_preprocessor import VinPreprocessor, vin_preprocessor
__all__ = [
"ImagePreprocessor",
"preprocessor",
"VinPreprocessor",
"vin_preprocessor",
]