Commit Graph

186 Commits

Author SHA1 Message Date
Benjamin Admin
41e47baf13 fix: skip_heal_gaps Parameter an Stream-Generator durchreichen
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NameError behoben: skip_heal_gaps war nicht im Scope der
_word_batch_stream_generator Funktion.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-11 09:11:16 +01:00
Benjamin Admin
8a60f4bf30 fix: Overlay-Zellen ohne _heal_row_gaps positionieren (skip_heal_gaps)
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_heal_row_gaps verschiebt Zell-Positionen nach Entfernung von Artefakt-Zeilen,
was im Overlay zu sichtbarem Versatz fuehrt (z.B. 23px bei "badge").
Neuer skip_heal_gaps Parameter in build_cell_grid_v2 und words-Endpoint
behaelt die exakten Zeilen-Positionen bei.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-11 08:59:50 +01:00
Benjamin Admin
e3ee1de790 Revert "fix: Zeilen-Regularisierung im Overlay ueberspringen (generisch fuer gemischte Inhalte)"
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This reverts commit b91f799ccf.
2026-03-11 08:44:07 +01:00
Benjamin Admin
b91f799ccf fix: Zeilen-Regularisierung im Overlay ueberspringen (generisch fuer gemischte Inhalte)
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Seiten mit Info-Boxen (andere Zeilenhoehe) fuehren dazu, dass _regularize_row_grid
die Zeilenpositionen verzerrt. Neuer skip_regularize Parameter nutzt stattdessen
die gap-basierten Zeilen, die der tatsaechlichen Seitengeometrie folgen.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-11 08:29:06 +01:00
Benjamin Admin
e2ad93fd57 fix: Word-Erkennung ohne Spalten ermoeglichen (Full-Page Pseudo-Column)
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Wenn column_result fehlt (z.B. OCR Overlay Pipeline), wird automatisch
eine einzelne ganzseitige Pseudo-Spalte erzeugt statt einen Fehler zu werfen.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-11 00:16:31 +01:00
Benjamin Admin
618c82ef42 fix: Zeilen an Box-Grenze nicht mehr abschneiden (border_thickness Margin)
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- detect_rows: Content-Strips nutzen jetzt box_ranges_inner (geschrumpft
  um border_thickness, min 5px) statt der vollen Box-Range
- detect_words: _row_in_box Filter nutzt ebenfalls inner Range
- Dadurch wird die letzte Zeile oberhalb einer Box nicht mehr
  faelschlicherweise der Box zugeordnet und ausgeschlossen

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-10 17:44:02 +01:00
Benjamin Admin
6bb023bdc1 fix: vocab_entries fuer column_text Sub-Sessions generieren
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_cells_to_vocab_entries wurde nur bei is_vocab (column_en/column_de)
aufgerufen. Fuer Sub-Sessions mit column_text wurden keine Eintraege
erzeugt, daher blieb die Korrektur-Tabelle leer.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-10 10:28:27 +01:00
Benjamin Admin
13553fc5e6 fix: column_text Typ fuer Sub-Sessions in Korrektur-Tabelle
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_cells_to_vocab_entries kannte column_text nicht, daher wurden
keine Eintraege erzeugt. Jetzt mappt column_text -> 'text' Feld.

Frontend: column_text in FIELD_LABELS/COL_TYPE_TO_FIELD/COL_TYPE_COLOR.
Label: "Tabelle" statt "Vokabeltabelle" fuer Sub-Sessions.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-10 09:48:40 +01:00
Benjamin Admin
964c916a81 fix: _clean_cell_text entfernt Waehrungssymbole am Zeilenende
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_is_noise_tail_token() stuft rein nicht-alphabetische Tokens wie
€0.50, £1, €2.50 als OCR-Noise ein und entfernt sie. Zusaetzlich
zerstoert ' '.join(tokens) das proportionale Spacing.

Fuer Single-Column Sub-Sessions wird _clean_cell_text uebersprungen.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-10 09:41:25 +01:00
Benjamin Admin
13510b62cc debug: Log-Level auf INFO fuer Sub-Session Zellinhalte
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Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-10 09:33:56 +01:00
Benjamin Admin
3a791179af debug: Logging fuer Sub-Session Woertererkennung
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Zeigt low-confidence Woerter (conf<30) und Zellinhalte pro Zeile,
um fehlende Euro/Pfund-Betraege zu diagnostizieren.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-10 09:31:34 +01:00
Benjamin Admin
f65bd11919 fix: Sub-Session Zeilenerkennung nutzt Word-Grouping statt Gap-Detection
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Gap-basierte Erkennung findet bei kleinen Box-Bildern zu wenige Gaps
und mergt Zeilen (7 raw gaps -> 4 validated -> nur 3 rows statt 6).
Sub-Sessions nutzen jetzt direkt _build_rows_from_word_grouping(),
das Woerter nach Y-Position clustert — robuster fuer komplexe Box-Layouts.

Zusaetzlich: alle zones=None Crashes gefixt (replace_all .get("zones") or []).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-10 09:05:24 +01:00
Benjamin Admin
785b4d7655 fix: zones=None crash bei Sub-Session Zeilenerkennung
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column_result.get("zones", []) gibt None zurueck wenn der Key mit
Wert None existiert. Geaendert zu .get("zones") or [].

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-10 08:50:58 +01:00
Benjamin Admin
2716495250 fix: Sub-Session Zeilenerkennung — Tesseract+inv im Spalten-Schritt cachen
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Bisher wurden _word_dicts, _inv und _content_bounds fuer Sub-Sessions
nicht gecacht, sodass detect_rows auf detect_column_geometry() zurueckfiel.
Das konnte bei kleinen Box-Bildern mit <5 Woertern fehlschlagen.

Jetzt laeuft Tesseract + Binarisierung direkt im Pseudo-Spalten-Block,
und die Intermediates werden gecacht. Zusaetzlich ausfuehrliche Kommentare
zur Zeilenerkennung (detect_row_geometry, _regularize_row_grid).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-10 08:43:26 +01:00
Benjamin Admin
23b7840ea7 feat: Full-Row OCR mit Spacing fuer Box-Sub-Sessions
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Sub-Sessions ueberspringen Spaltenerkennung und nutzen stattdessen eine
Pseudo-Spalte ueber die volle Breite. Text wird mit proportionalem
Spacing aus Wort-Positionen rekonstruiert, um raeumliches Layout zu erhalten.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-10 08:28:29 +01:00
Benjamin Admin
34adb437d0 fix: Bild-Endpoints fallen auf original zurueck fuer Sub-Sessions
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Alle Bild-Endpoints (cropped, columns-overlay, rows-overlay,
words-overlay) suchten nur nach cropped/dewarped. Sub-Sessions haben
nur ein original-Bild. Neue Hilfsfunktion _get_base_image_png() mit
Fallback-Kette: cropped > dewarped > original.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-09 23:30:38 +01:00
Benjamin Admin
ceaef9c6a6 fix: Sub-Sessions original_bgr als cropped_bgr promoten
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Spalten-/Zeilen-/Woerter-Erkennung suchen nach cropped_bgr oder
dewarped_bgr. Bei Sub-Sessions existiert nur original_bgr (der
Box-Ausschnitt). Jetzt wird original_bgr automatisch als cropped_bgr
gesetzt, sowohl im Cache-Aufbau als auch bei der Erstellung.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-09 22:57:39 +01:00
Benjamin Admin
256efef3ea feat: Box-Zonen durch gesamte Pipeline + Sub-Sessions fuer Box-Inhalt
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- Rote semi-transparente Box-Markierung in allen Overlays (Spalten, Zeilen, Woerter)
- Zeilenerkennung: Combined-Image-Ansatz schliesst Box-Bereiche aus
- Woerter-Erkennung: Zeilen innerhalb von Box-Zonen werden gefiltert
- Sub-Sessions: parent_session_id/box_index in DB-Schema
- POST /sessions/{id}/create-box-sessions erstellt Sub-Sessions aus Box-Regionen
- Session-Info zeigt Sub-Sessions bzw. Parent-Verknuepfung
- Sessions-Liste blendet Sub-Sessions per Default aus
- Rekonstruktion: Fabric-JSON merged Sub-Session-Zellen an Box-Positionen
- Save-Reconstruction routet box{N}_* Updates an Sub-Sessions
- GET /sessions/{id}/vocab-entries/merged fuer zusammengefuehrte Eintraege

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-09 18:24:34 +01:00
Benjamin Admin
4610137ecc fix: Box-Bereiche aus Bild entfernen statt pro Zone separat Spalten erkennen
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Content-Streifen oberhalb/unterhalb von Boxen werden zu einem Bild zusammengefügt,
Spaltenerkennung läuft einmal auf dem kombinierten Bild. Entfernt Step 5c
(suspicion-based gap alignment), da der neue Ansatz das Problem an der Wurzel löst.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-09 17:03:05 +01:00
Benjamin Admin
fb46450802 fix: Alignment-Validierung nur fuer verdaechtige Gaps (>2x Median-Breite)
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Vorher wurden alle internen Gaps geprueft, was echte Spaltentrennungen
(EN→DE) faelschlicherweise entfernte. Jetzt werden nur Gaps geprueft,
die eine unverhaeltnismaessig breite rechte Spalte erzeugen wuerden
(>2x Median-Spaltenbreite). Schwelle auf 15% gesenkt.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-09 16:27:14 +01:00
Benjamin Admin
11126c4436 fix: UnboundLocalError edge_tolerance in Step 5c
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Variable wurde vor ihrer Definition in Step 7 referenziert.
Eigene margin_thresh Variable fuer Step 5c eingefuehrt.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-09 16:18:47 +01:00
Benjamin Admin
7a0ded7562 fix: Left-Edge-Alignment-Validierung fuer Spalten-Gaps
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Interiore Gaps werden jetzt geprueft: rechts des Gaps muessen
mindestens 25% der Woerter eine gemeinsame linke Kante teilen.
Verhindert falsche Spaltentrennungen innerhalb breiter Spalten
(z.B. Example-Spalte mit kurzen und langen Eintraegen).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-09 16:11:58 +01:00
Benjamin Admin
04be24a89e fix: fehlende Imports RAPIDOCR_AVAILABLE und _RE_ALPHA in cv_cell_grid.py
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Weitere NameError-Probleme vom Modul-Refactoring: beide Symbole
werden in cv_cell_grid.py benutzt, sind aber in cv_ocr_engines.py
definiert und waren nicht importiert.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-09 15:59:24 +01:00
Benjamin Admin
cf9dde9876 fix: _group_words_into_lines nach cv_ocr_engines.py verschieben
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Funktion war nur in cv_review.py definiert, wurde aber auch in
cv_ocr_engines.py und cv_layout.py benutzt — NameError zur Laufzeit.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-09 15:24:56 +01:00
Benjamin Admin
60c4138660 fix: _MIN_WORD_CONF als Modul-Konstante statt lokale Variable
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NameError in build_cell_grid_v2 weil _MIN_WORD_CONF nur in
_ocr_cell_crop und build_cell_grid lokal definiert war.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-09 15:12:02 +01:00
Benjamin Admin
7005b18561 feat: generische Box-Erkennung fuer zonenbasierte Spaltenerkennung
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- Neue Datei cv_box_detect.py: 2-Stufen-Algorithmus (Linien + Farbe)
- DetectedBox/PageZone Dataclasses in cv_vocab_types.py
- detect_column_geometry_zoned() in cv_layout.py
- API-Endpoints erweitert: zones/boxes_detected im column_result
- Overlay-Funktionen zeichnen Box-Grenzen als gestrichelte Rechtecke
- Fix: numpy array or-Verknuepfung an 7 Stellen in ocr_pipeline_api.py
- 12 Unit-Tests fuer Box-Erkennung und Zone-Splitting

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-09 15:06:23 +01:00
Benjamin Admin
e60254bc75 fix: alle Post-Crop-Schritte nutzen cropped statt dewarped Bild
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Spalten-, Zeilen-, Woerter-Overlay und alle nachfolgenden Steps
(LLM-Review, Rekonstruktion) lesen jetzt image/cropped mit Fallback
auf image/dewarped. Tests fuer page_crop.py hinzugefuegt (25 Tests).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-09 09:10:10 +01:00
Benjamin Admin
156a818246 refactor: Crop nach Deskew/Dewarp verschieben + content-basierter Buchscan-Crop
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Pipeline-Reihenfolge neu: Orientierung → Begradigung → Entzerrung → Zuschneiden → Spalten...
Crop arbeitet jetzt auf dem bereits geraden Bild, was bessere Ergebnisse liefert.

page_crop.py komplett ersetzt: Adaptive Threshold + 4-Kanten-Erkennung
(Buchruecken-Schatten links, Ink-Projektion fuer alle Raender) statt
Otsu + groesste Kontur.

Backend: Step-Nummern, Input-Bilder, Reprocess-Kaskade angepasst.
Frontend: PIPELINE_STEPS umgeordnet, Switch-Cases, Vorher-Bilder aktualisiert.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-09 08:52:11 +01:00
Benjamin Admin
eb45bb4879 fix: numpy array or-Verknuepfung in Crop/Deskew + ImageCompareView Labels
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- orientation_crop_api.py: `array or array` durch `is not None` ersetzt
  (ValueError bei numpy Arrays)
- ocr_pipeline_api.py: gleicher Fix fuer Deskew-Fallback-Kette
- ImageCompareView.tsx: Fallback-Text nutzt rightLabel statt "Begradigung"

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-09 08:02:44 +01:00
Benjamin Admin
2763631711 feat: Orientierung + Zuschneiden als Schritte 1-2 in OCR-Pipeline
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Zwei neue Wizard-Schritte vor Begradigung:
- Step 1: Orientierungserkennung (0/90/180/270° via Tesseract OSD)
- Step 2: Seitenrand-Erkennung und Zuschnitt (Scannerraender entfernen)

Backend:
- orientation_crop_api.py: POST /orientation, POST /crop, POST /crop/skip
- page_crop.py: detect_and_crop_page() mit Format-Erkennung (A4/A5/Letter)
- Session-Store: orientation_result, crop_result Felder
- Pipeline nutzt zugeschnittenes Bild fuer Deskew/Dewarp

Frontend:
- StepOrientation.tsx: Upload + Auto-Orientierung + Vorher/Nachher
- StepCrop.tsx: Auto-Crop + Format-Badge + Ueberspringen-Option
- Pipeline-Stepper: 10 Schritte (war 8)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-08 23:55:23 +01:00
Benjamin Admin
9a5a35bff1 refactor: cv_vocab_pipeline.py in 6 Module aufteilen (8163 → 6 + Fassade)
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Monolithische 8163-Zeilen-Datei aufgeteilt in fokussierte Module:
- cv_vocab_types.py (156 Z.): Dataklassen, Konstanten, IPA, Feature-Flags
- cv_preprocessing.py (1166 Z.): Bild-I/O, Orientierung, Deskew, Dewarp
- cv_layout.py (3036 Z.): Dokumenttyp, Spalten, Zeilen, Klassifikation
- cv_ocr_engines.py (1282 Z.): OCR-Engines, Vocab-Postprocessing, Text-Cleaning
- cv_cell_grid.py (1510 Z.): Cell-Grid v2+Legacy, Vocab-Konvertierung
- cv_review.py (1184 Z.): LLM/Spell Review, Pipeline-Orchestrierung

cv_vocab_pipeline.py ist jetzt eine Re-Export-Fassade (35 Z.) —
alle bestehenden Imports bleiben unveraendert.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-08 23:46:47 +01:00
Benjamin Admin
931ab92c92 feat: Orientierungserkennung in OCR-Pipeline-Deskew integrieren
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detect_and_fix_orientation() wird jetzt vor dem Deskew-Schritt in der
OCR-Pipeline ausgefuehrt, sodass 90/180/270°-gedrehte Scans automatisch
korrigiert werden. Frontend zeigt Orientierungskorrektur als Info-Banner.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-08 22:31:36 +01:00
Benjamin Admin
853638b03c Revert "fix: _split_broad_columns nur bei maximal 1 breiter Spalte ausfuehren"
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This reverts commit d98359fceb.
2026-03-07 22:55:24 +01:00
Benjamin Admin
d98359fceb fix: _split_broad_columns nur bei maximal 1 breiter Spalte ausfuehren
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Wenn bereits 2+ breite Content-Spalten existieren, ist das Layout
wahrscheinlich korrekt in EN/DE getrennt. Split wird nur ausgefuehrt
wenn eine einzelne breite Spalte EN+DE kombiniert enthaelt.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-07 22:51:14 +01:00
Benjamin Admin
e1ae5d5fa9 fix: Edge-Gaps in _split_broad_columns ignorieren + return-Tuple bei leerem Ergebnis
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Gaps die den Spaltenrand beruehren (Margins) werden jetzt ausgeschlossen,
nur interne Gaps werden als Split-Kandidaten betrachtet. Behebt das
Problem dass trailing whitespace faelschlich als groesster Gap gewaehlt
wurde. Early-return in _run_ocr_pipeline_for_page gibt jetzt korrekt
([], rotation) statt [] zurueck.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-07 22:16:29 +01:00
Benjamin Admin
4e8ea77140 fix: leere Spalten als strukturell behandeln + 2-Spalten-Layout korrekt labeln
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Spalten mit <=2 Woertern und <15% Breite werden jetzt als column_marker
statt als content-Spalte klassifiziert. Bei 2 breiten Content-Spalten
wird die rechte als column_example statt column_de gelabelt, da die
linke Spalte EN+DE kombiniert enthaelt.
OSD-Zoom von 1.0 auf 2.0 erhoeht fuer zuverlaessigere Orientierungserkennung.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-07 19:35:21 +01:00
Benjamin Admin
e8ba5ec073 fix: Orientierungserkennung beim PDF-Upload statt erst bei OCR
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Rotation wird jetzt in upload_pdf_get_info() erkannt, damit Thumbnails
bei der Seitenauswahl bereits richtig herum angezeigt werden.
Debug-Logging fuer _split_broad_columns hinzugefuegt.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-07 19:11:45 +01:00
Benjamin Admin
02631dc4e0 feat: breite Spalten per Word-Gap splitten + gedrehte Scans im Frontend anzeigen
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_split_broad_columns() erkennt EN/DE-Gemisch in breiten Spalten via
Word-Coverage-Analyse und trennt sie am groessten Luecken-Gap.
Thumbnails und Page-Images werden serverseitig per fitz rotiert,
Frontend laedt Thumbnails nach OCR-Processing neu.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-07 18:16:32 +01:00
Benjamin Admin
a5635e0c43 feat: automatische Orientierungserkennung fuer umgedrehte Scans
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Tesseract OSD erkennt 0/90/180/270° Rotation und korrigiert
automatisch vor dem Deskew. Loest das Problem mit Buchscannern,
bei denen jede 2. Seite auf dem Kopf steht.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-07 17:26:21 +01:00
Benjamin Admin
7a1bd5e82d refactor: positional_column_regions auch in OCR Pipeline verwenden
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Shared Funktion positional_column_regions() in cv_vocab_pipeline.py,
wird jetzt von beiden Pfaden (Vocab-Worksheet + OCR Pipeline Admin)
genutzt. classify_column_types() bleibt als Legacy erhalten.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-07 17:20:51 +01:00
Benjamin Admin
a5df2b6e15 fix: Spaltenklassifikation im Vocab-Worksheet durch positionsbasierte Zuordnung ersetzen
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Sprachbasiertes Scoring (classify_column_types) verursachte vertauschte
Spalten auf Seite 3 bei Beispielsaetzen mit vielen englischen Funktionswoertern.
Neue _positional_column_regions() ordnet Spalten rein geometrisch (links→rechts)
zu. OCR Pipeline Admin bleibt unveraendert.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-07 17:07:11 +01:00
Benjamin Admin
4532f68173 fix: Word-Validation auf Segment-Woerter beschraenken
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Woerter aus Sub-Header-Bereichen ueberlappten korrekte Spaltenluecken
und liessen die Word-Validation faelschlich Gaps verwerfen. Jetzt werden
nur Woerter aus dem gewaehlten Segment fuer die Validation verwendet.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-05 23:13:19 +01:00
Benjamin Admin
391449fedf fix: Seite an Sub-Headern segmentieren, groesstes Segment fuer Projektion
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Statt full-width Zeilen zu maskieren wird die Seite jetzt an grossen
horizontalen Luecken (Sub-Header, Kapitelgrenzen) in Segmente unterteilt.
Das groesste Segment wird fuer die vertikale Projektion verwendet.
Dadurch stoeren Illustrationen und Ueberschriften nicht mehr.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-05 23:07:23 +01:00
Benjamin Admin
cb2b924a7b fix: word-coverage gap detection als Fallback bei Illustrationen
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Wenn pixel-basierte Projektion zu wenige Spaltenluecken findet (z.B.
durch Illustrationen/Grafiken die Luecken fuellen), wird jetzt eine
wort-basierte Gap-Detection als Zwischenschritt vor dem Clustering
ausgefuehrt. Tesseract-Wort-BBs sind immun gegen dekorative Grafiken.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-05 22:58:27 +01:00
Benjamin Admin
8f3a50b981 fix: full-width Zeilen vor Spaltenerkennung maskieren
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Farbige Sub-Header (z.B. "Unit 4: Bonnie Scotland") mit voller Breite
fuellten die Spaltenluecken im vertikalen Projektionsprofil auf und
fuehrten zu 11 statt 5 erkannten Spalten. Zeilen mit >40% Tintendichte
werden jetzt vor der Projektion maskiert.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-05 22:50:27 +01:00
Benjamin Admin
2ad391e4e4 feat: Feinabstimmung mit 7 Schiebereglern fuer Deskew/Dewarp
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Neues aufklappbares Panel unter Entzerrung mit individuellen Reglern:
- 3 Rotations-Regler (P1 Iterative, P2 Word-Alignment, P3 Textline)
- 4 Scherungs-Regler (A-D Methoden) mit Radio-Auswahl
- Kombinierte Vorschau und Ground-Truth-Speicherung
- Backend: POST /sessions/{id}/adjust-combined Endpoint

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-05 18:22:33 +01:00
Benjamin Admin
d39d249daa feat: add pass 3 text-line regression to deskew pipeline
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After iterative projection (pass 1) and word-alignment (pass 2), a third
pass uses Tesseract word positions + linear regression per text line to
measure and correct residual rotation. This catches cases where passes 1-2
leave significant slope (e.g. 1.7° residual on heavily skewed scans).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-05 17:53:11 +01:00
Benjamin Admin
538d5c732e feat: two-pass deskew with wider angle range and residual correction
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- Increase iterative deskew coarse_range from ±2° to ±5° to handle
  heavily skewed scans
- New deskew_two_pass(): runs iterative projection first, then
  word-alignment on the corrected image to detect/fix residual skew
  (applied when residual ≥ 0.3°)
- OCR pipeline API auto_deskew now uses deskew_two_pass by default
- Vocab worksheet _run_ocr_pipeline_for_page uses deskew_two_pass
- Deskew result now includes angle_residual and two_pass_debug

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-05 17:34:57 +01:00
Benjamin Admin
b7ae36e92b feat: use OCR pipeline instead of LLM vision for vocab worksheet extraction
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process-single-page now runs the full CV pipeline (deskew → dewarp → columns →
rows → cell-first OCR v2 → LLM review) for much better extraction quality.
Falls back to LLM vision if pipeline imports are unavailable.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-05 15:35:44 +01:00
Benjamin Admin
b8a9493310 fix: deskew iterative — use vertical Sobel edges + vertical projection
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Horizontal projection of binary image is insensitive at 0.5° because
text rows look nearly identical. The real discriminator is vertical edge
alignment: at the correct angle, word left-edges and column borders
become truly vertical, producing sharp peaks in the vertical projection
of Sobel-X edges. Also: BORDER_REPLICATE + trim to avoid artifacts.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-05 14:23:43 +01:00