将ocr解析模块独立出来

ocr/__init__.py

@@ -0,0 +1,53 @@
+#
+#  Copyright 2025 The InfiniFlow Authors. All Rights Reserved.
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+#
+"""
+独立的 OCR 模块
+
+此模块从 RAGFlow 项目中提取，已经移除了对 RAGFlow 特定模块的依赖。
+可以直接作为独立模块使用。
+
+使用方法：
+    from ocr import OCR
+    import cv2
+    
+    ocr = OCR()
+    img = cv2.imread("image.jpg")
+    results = ocr(img)
+"""
+
+# 处理导入问题：支持直接运行和模块导入
+import sys
+from pathlib import Path
+
+try:
+    _package = __package__
+except NameError:
+    _package = None
+
+if _package is None:
+    # 直接运行时，添加父目录到路径并使用绝对导入
+    parent_dir = Path(__file__).parent.parent
+    if str(parent_dir) not in sys.path:
+        sys.path.insert(0, str(parent_dir))
+    from ocr.ocr import OCR, TextDetector, TextRecognizer
+    from ocr.pdf_parser import SimplePdfParser
+else:
+    # 作为模块导入时使用相对导入
+    from .ocr import OCR, TextDetector, TextRecognizer
+    from .pdf_parser import SimplePdfParser
+
+__all__ = ['OCR', 'TextDetector', 'TextRecognizer', 'SimplePdfParser']
+