Update app.py

app.py

@@ -7,12 +7,12 @@ import cv2
 from ocr_engine import extract_weight_from_image
 
 def preprocess_image(img):
-    # Enhance sharpness and contrast (PIL)
+    # Enhance sharpness & contrast (PIL)
     img = img.filter(ImageFilter.SHARPEN)
     enhancer = ImageEnhance.Contrast(img)
     img = enhancer.enhance(2.0)
 
-    # Convert PIL image to OpenCV format
+    # Convert to OpenCV image
     img_cv = cv2.cvtColor(np.array(img), cv2.COLOR_RGB2BGR)
     return img_cv