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tane/apps/app_seeds/assets/ocr_fixtures/README.md
vjrj 6809dc6143 feat(inventory): photo-first drafts + on-device OCR (digitization R2+R4) 
Lower the bulk-digitization cliff with two more routes on top of the
already-landed CSV import and "save and add another":

- Photo-first drafts (capture now, catalogue later): burst-capture
  photos (camera or multi-gallery) into unnamed draft varieties, shown
  in a "to catalogue" tray, hidden from the main list until named.
  Adds Variety.isDraft (schema), addDraftVariety/watchDrafts/nameDraft,
  the triage sheet and the inventory banner.
- On-device OCR label suggestion (Tesseract, offline, no Google): a
  "Suggest name from photo" button in the naming dialog behind a
  LabelTextExtractor interface (Tesseract on Android/iOS, no-op
  elsewhere). Reads the largest print via hOCR bounding boxes, drops
  boilerplate/low-confidence noise, preprocesses (grayscale, contrast,
  upscale) and sweeps rotations (0-315 deg) so tilted packets still
  read. Bundles tessdata_fast eng+spa; validated on-device against real
  packets. The photo is written to a temp file deleted immediately in a
  finally block (the plugin needs a path) - a bounded, documented
  exception to no-plaintext-at-rest.

This commit also carries the co-developed schema evolution v5 to v8 that
shares these files (organic flag, species viability years, crop
calendar, lot provenance/abundance/preservation format, condition
checks) plus their exports/migrations and i18n.

Tests: CSV/draft/OCR unit + widget + migration green in isolation.
Note: the full widget suite currently hangs (>10 min) - under investigation.
2026-07-09 21:23:46 +02:00

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OCR validation fixtures

Real packet photos used by integration_test/ocr_label_test.dart to check that on-device Tesseract reads the variety name correctly.

Drop your photos here with these names:

  • aubergine.jpg — the AUBERGINE BLACK BEAUTY packet
  • cucumber.jpg — the CUCUMBER SUPERMARKETER packet

Then run on a connected Android device/emulator (native OCR does not run on the host test VM):

flutter test integration_test/ocr_label_test.dart -d <device>

Each test prints OCR[<file>] => "<suggestion>" so you can see exactly what Tesseract read. These fixtures are only for validation — remove the folder from pubspec.yaml assets before shipping if you don't want them in the bundle.