Update app.py

app.py

@@ -8,7 +8,7 @@ def preprocess(img):
     cv2.imwrite("1_gray.png", img_gray)
 
     # Blur the image
-    img_blur = cv2.GaussianBlur(img_gray, (3, 3), 16)
+    img_blur = cv2.GaussianBlur(img_gray, (3, 3), 1)
     cv2.imwrite("2_blur.png", img_blur)
 
     # Detect edges with Canny