Update mdr_pdf_parser.py

mdr_pdf_parser.py

@@ -2822,7 +2822,7 @@ class MDRExtractionEngine:
         ori_im_cv = cv2.cvtColor(np.array(image.convert("RGB")), cv2.COLOR_RGB2BGR)
 
         gray_cv = cv2.cvtColor(ori_im_cv, cv2.COLOR_BGR2GRAY)
-        clahe_obj = cv2.createCLAHE(clipLimit=1.0, tileGridSize=(8, 8))
+        clahe_obj = cv2.createCLAHE(clipLimit=3.0, tileGridSize=(8, 8))
         enhanced_gray_cv = clahe_obj.apply(gray_cv)
         # Convert back to BGR for downstream components that might expect 3 channels
         # (even if they only use one, like the detector)