Update app.py

app.py

@@ -14,7 +14,7 @@ def preprocess(image):
     # Convert RGB image to grayscale using OpenCV
         gray = cv2.cvtColor(image, cv2.COLOR_RGB2GRAY) 
 #     blur = cv2.GaussianBlur(gray, (3,3),6) 
-    blur = cv2.bilateralFilter(gray,9,75,75)
+    blur = cv2.bilateralFilter(gray,6,3,3)
     threshold_img = cv2.adaptiveThreshold(blur,255,1,1,11,2)
     return threshold_img