Update app.py

app.py

@@ -108,7 +108,7 @@ class ImageProcessor:
         
         # Make a writable copy of the image
         img_writable = self.convert_rgb(img).copy()
-        output = cv2.drawContours(img_writable, cnts, -1, (255, 0, 0), 3)
+        output = cv2.drawContours(img_writable, cnts, -1, (255, 0, 0), 1)
         return Image.fromarray(output)
 
     def convert_one_channel(self, img):