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  Add adaptive preprocessing escalation and single-receipt test scripts

  matthias released this 2026-10-04 08:25:41 +00:00 | 3 commits to main since this release

  Preprocessing now tries progressively heavier variants per receipt
  (plain -> high-pass -> edge-enhance -> both), stopping as soon as a
  cheap LLM-free arithmetic check on the OCR text looks plausible, so
  the extra processing only applies to receipts that need it. A flat
  version of the same heavier processing regressed the full batch by
  helping hard receipts but hurting easy ones; the adaptive version
  improves date-matching 37/52 -> 40/52 with no regression (see
  testing/2026_10_04_gimp_highpass_nlfilter_experiment.md).

  Also adds test_ocr.sh and test_single.sh for checking a single
  receipt's OCR text or full pipeline result without a batch run.

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  • Source Code (TAR.GZ)