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fix: alle Post-Crop-Schritte nutzen cropped statt dewarped Bild
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Browse Source 
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>
This commit is contained in:
Benjamin Admin
2026-03-09 09:10:10 +01:00
parent 156a818246
commit e60254bc75
9 changed files with 471 additions and 59 deletions
Download Patch File Download Diff File Expand all files Collapse all files

42
klausur-service/backend/ocr_pipeline_api.py
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@@ -1207,7 +1207,7 @@ async def get_column_ground_truth(session_id: str):
async def _get_columns_overlay(session_id: str) -> Response:
"""Generate dewarped image with column borders drawn on it."""
"""Generate cropped (or dewarped) image with column borders drawn on it."""
session = await get_session_db(session_id)
if not session:
raise HTTPException(status_code=404, detail=f"Session {session_id} not found")
@@ -1216,12 +1216,14 @@ async def _get_columns_overlay(session_id: str) -> Response:
if not column_result or not column_result.get("columns"):
raise HTTPException(status_code=404, detail="No column data available")
# Load dewarped image
dewarped_png = await get_session_image(session_id, "dewarped")
if not dewarped_png:
raise HTTPException(status_code=404, detail="Dewarped image not available")
# Load cropped image (preferred) or dewarped as fallback
base_png = await get_session_image(session_id, "cropped")
if not base_png:
base_png = await get_session_image(session_id, "dewarped")
if not base_png:
raise HTTPException(status_code=404, detail="No base image available (cropped/dewarped)")
arr = np.frombuffer(dewarped_png, dtype=np.uint8)
arr = np.frombuffer(base_png, dtype=np.uint8)
img = cv2.imdecode(arr, cv2.IMREAD_COLOR)
if img is None:
raise HTTPException(status_code=500, detail="Failed to decode image")
@@ -2692,7 +2694,7 @@ async def reprocess_session(session_id: str, request: Request):
async def _get_rows_overlay(session_id: str) -> Response:
"""Generate dewarped image with row bands drawn on it."""
"""Generate cropped (or dewarped) image with row bands drawn on it."""
session = await get_session_db(session_id)
if not session:
raise HTTPException(status_code=404, detail=f"Session {session_id} not found")
@@ -2701,12 +2703,14 @@ async def _get_rows_overlay(session_id: str) -> Response:
if not row_result or not row_result.get("rows"):
raise HTTPException(status_code=404, detail="No row data available")
# Load dewarped image
dewarped_png = await get_session_image(session_id, "dewarped")
if not dewarped_png:
raise HTTPException(status_code=404, detail="Dewarped image not available")
# Load cropped image (preferred) or dewarped as fallback
base_png = await get_session_image(session_id, "cropped")
if not base_png:
base_png = await get_session_image(session_id, "dewarped")
if not base_png:
raise HTTPException(status_code=404, detail="No base image available (cropped/dewarped)")
arr = np.frombuffer(dewarped_png, dtype=np.uint8)
arr = np.frombuffer(base_png, dtype=np.uint8)
img = cv2.imdecode(arr, cv2.IMREAD_COLOR)
if img is None:
raise HTTPException(status_code=500, detail="Failed to decode image")
@@ -2753,7 +2757,7 @@ async def _get_rows_overlay(session_id: str) -> Response:
async def _get_words_overlay(session_id: str) -> Response:
"""Generate dewarped image with cell grid drawn on it."""
"""Generate cropped (or dewarped) image with cell grid drawn on it."""
session = await get_session_db(session_id)
if not session:
raise HTTPException(status_code=404, detail=f"Session {session_id} not found")
@@ -2767,12 +2771,14 @@ async def _get_words_overlay(session_id: str) -> Response:
if not cells and not word_result.get("entries"):
raise HTTPException(status_code=404, detail="No word data available")
# Load dewarped image
dewarped_png = await get_session_image(session_id, "dewarped")
if not dewarped_png:
raise HTTPException(status_code=404, detail="Dewarped image not available")
# Load cropped image (preferred) or dewarped as fallback
base_png = await get_session_image(session_id, "cropped")
if not base_png:
base_png = await get_session_image(session_id, "dewarped")
if not base_png:
raise HTTPException(status_code=404, detail="No base image available (cropped/dewarped)")
arr = np.frombuffer(dewarped_png, dtype=np.uint8)
arr = np.frombuffer(base_png, dtype=np.uint8)
img = cv2.imdecode(arr, cv2.IMREAD_COLOR)
if img is None:
raise HTTPException(status_code=500, detail="Failed to decode image")