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1""" 

2OCR preprocessor for extracting text from images. 

3 

4Note: This is a simplified implementation. In production, 

5integrate with libraries like pytesseract, EasyOCR, or cloud services. 

6""" 

7 

8from __future__ import annotations 

9 

10from lexigram.ai.rag.preprocessing.base import AbstractPreprocessor 

11from lexigram.ai.rag.preprocessing.document import PreprocessedDocument 

12 

13 

14class OCRPreprocessor(AbstractPreprocessor): 

15 """OCR preprocessor for extracting text from images. 

16 

17 Note: This is a simplified implementation. In production, 

18 integrate with libraries like pytesseract, EasyOCR, or cloud services. 

19 """ 

20 

21 def __init__(self, language: str = "eng"): 

22 """Initialize OCR preprocessor. 

23 

24 Args: 

25 language: Language code for OCR. 

26 """ 

27 super().__init__("ocr") 

28 self.language = language 

29 

30 async def preprocess( 

31 self, 

32 content: str, 

33 **kwargs, 

34 ) -> PreprocessedDocument: 

35 """Extract text from image using OCR. 

36 

37 Args: 

38 content: Image file path or base64 encoded image. 

39 **kwargs: Additional parameters. 

40 

41 Returns: 

42 Preprocessed document with OCR text. 

43 

44 Raises: 

45 NotImplementedError: OCR is not implemented in this version. 

46 """ 

47 msg = ( 

48 "OCR preprocessing is not natively implemented. " 

49 "Please integrate with a real OCR library (e.g., pytesseract, EasyOCR) " 

50 "or use a cloud-based OCR service." 

51 ) 

52 raise NotImplementedError(msg)