Benjamin_Boenisch/breakpilot-lehrer
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2f34ee9ede0b6307937b3db8e05f44bb5788f48d
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3 Commits

Author SHA1 Message Date
Benjamin Admin
2f34ee9ede Add scan quality scoring, column limit, image enhancement (Steps 1-3)
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Step 1: scan_quality.py — Laplacian blur + contrast scoring, adjusts
OCR confidence threshold (40 for good scans, 30 for degraded).
Quality report included in API response + shown in frontend.

Step 2: max_columns parameter in cv_words_first.py — limits column
detection to 3 for vocab tables, preventing phantom columns D/E
from degraded OCR fragments.

Step 3: ocr_image_enhance.py — CLAHE contrast + bilateral filter
denoising + unsharp mask, only for degraded scans (gated by
quality score). Pattern from handwriting_htr_api.py.

Frontend: quality info shown in extraction status after processing.
Reprocess button now derives pages from vocabulary data.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-23 14:58:39 +02:00
Benjamin Admin
9b0e310978 Fix: reprocess button works after session resume + apply merge logic
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Two bugs fixed:
1. reprocessPages() failed silently after session resume because
   successfulPages was empty. Now derives pages from vocabulary
   source_page or selectedPages as fallback.

2. process-single-page endpoint built vocabulary entries WITHOUT
   applying merge logic (_merge_wrapped_rows, _merge_continuation_rows).
   Now applies full merge pipeline after vocabulary extraction.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-17 00:46:15 +02:00
Benjamin Admin
909d0729f6 Add SmartSpellChecker + refactor vocab-worksheet page.tsx
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SmartSpellChecker (klausur-service):
- Language-aware OCR post-correction without LLMs
- Dual-dictionary heuristic for EN/DE language detection
- Context-based a/I disambiguation via bigram lookup
- Multi-digit substitution (sch00l→school)
- Cross-language guard (don't false-correct DE words in EN column)
- Umlaut correction (Schuler→Schüler, uber→über)
- Integrated into spell_review_entries_sync() pipeline
- 31 tests, 9ms/100 corrections

Vocab-worksheet refactoring (studio-v2):
- Split 2337-line page.tsx into 14 files
- Custom hook useVocabWorksheet.ts (all state + logic)
- 9 components in components/ directory
- types.ts, constants.ts for shared definitions

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-12 12:25:01 +02:00