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Author SHA1 Message Date
Eric Gullickson
013fb0c67a feat: migrate VIN/receipt extractors and OCR service to engine abstraction (refs #117) 
Replace direct pytesseract calls with OcrEngine interface in vin_extractor.py,
receipt_extractor.py, and ocr_service.py. PSM mode fallbacks replaced with
engine-agnostic single-line/single-word configs. Dead _process_ocr_data removed.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
 2026-02-07 10:56:27 -06:00
Eric Gullickson
6319d50fb1 feat: add receipt OCR pipeline (refs #69)
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Implement receipt-specific OCR extraction for fuel receipts:

- Pattern matching modules for date, currency, and fuel data extraction
- Receipt-optimized image preprocessing for thermal receipts
- POST /extract/receipt endpoint with field extraction
- Confidence scoring per extracted field
- Cross-validation of fuel receipt data
- Unit tests for all pattern matchers

Extracted fields: merchantName, transactionDate, totalAmount,
fuelQuantity, pricePerUnit, fuelGrade

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
 2026-02-01 20:43:30 -06:00