fix: image alpha error

app/services/ocr_service.py

@@ -35,6 +35,7 @@ class OCRService:
         self.layout_detector = layout_detector 
         self.image_processor = image_processor
         self.converter = converter
+
     def _get_pipeline(self):    
         """Get or create PaddleOCR-VL pipeline.
 
@@ -127,15 +128,3 @@ class OCRService:
             return self.recognize_mixed(image)
         else:
             return self.recognize_formula(image)
-
-
-if __name__ == "__main__":
-    import cv2
-    from app.services.image_processor import ImageProcessor
-    from app.services.layout_detector import LayoutDetector
-    image_processor = ImageProcessor(padding_ratio=0.15)
-    layout_detector = LayoutDetector()
-    ocr_service = OCRService(image_processor=image_processor, layout_detector=layout_detector)
-    image = cv2.imread("test/image.png")
-    ocr_result = ocr_service.recognize(image)
-    print(ocr_result)