dekun
87 lines
2.4 KiB
Python
87 lines
2.4 KiB
Python
from pathlib import Path
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import os
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from PIL import Image
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from app.core.config import settings
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# 无图形界面服务器：避免 OpenCV/Paddle 依赖 X11
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os.environ.setdefault("OPENCV_IO_ENABLE_OPENEXR", "0")
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_ocr_engine = None
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def get_ocr_engine():
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global _ocr_engine
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if _ocr_engine is None:
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from paddleocr import PaddleOCR
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_ocr_engine = PaddleOCR(use_angle_cls=True, lang="ch", show_log=False)
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return _ocr_engine
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def _bbox_from_box(box: list) -> list[float]:
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xs = [float(p[0]) for p in box]
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ys = [float(p[1]) for p in box]
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return [min(xs), min(ys), max(xs), max(ys)]
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def run_ocr_with_regions(image_path: str) -> dict:
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"""Return OCR text plus line-level bounding boxes for annotation."""
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engine = get_ocr_engine()
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result = engine.ocr(image_path, cls=True)
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lines: list[dict] = []
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if result and result[0]:
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for item in result[0]:
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if not item or len(item) < 2:
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continue
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box, rec = item[0], item[1]
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text = rec[0] if rec else ""
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conf = float(rec[1]) if rec and len(rec) > 1 else 0.0
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if not text:
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continue
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lines.append(
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{
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"text": text,
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"confidence": conf,
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"box": box,
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"bbox": _bbox_from_box(box),
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}
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)
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width, height = 0, 0
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try:
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with Image.open(image_path) as img:
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width, height = img.size
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except OSError:
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pass
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return {
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"text": "\n".join(line["text"] for line in lines),
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"lines": lines,
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"width": width,
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"height": height,
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}
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def run_ocr(image_path: str) -> str:
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return run_ocr_with_regions(image_path)["text"]
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def save_upload_file(user_id: str, question_id: str, filename: str, content: bytes) -> str:
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ext = Path(filename).suffix.lower() or ".jpg"
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if ext not in {".jpg", ".jpeg", ".png", ".webp"}:
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ext = ".jpg"
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user_dir = Path(settings.UPLOAD_DIR) / user_id
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user_dir.mkdir(parents=True, exist_ok=True)
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rel_path = f"{user_id}/{question_id}{ext}"
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full_path = Path(settings.UPLOAD_DIR) / rel_path
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full_path.write_bytes(content)
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return rel_path
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def annotated_rel_path(original_rel: str) -> str:
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p = Path(original_rel)
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return str(p.parent / f"{p.stem}_marked.jpg")
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