Update app.py

app.py

@@ -39,10 +39,19 @@ def find_tip(points, convex_hull):
             return tuple(points[j])
 
 def find_tail(points, tip):
-    # Find the farthest point from the tip
-    farthest_point = max(points, key=lambda p: cv2.pointPolygonTest(np.array([tip], dtype=np.int32), tuple(p), True))
+    # Convert the tip and points to numpy arrays
+    tip = np.array([tip], dtype=np.float32)
+    points = np.array(points, dtype=np.int32)
 
-    return tuple(farthest_point)
+    # Find the index of the farthest point
+    distances = cv2.pointPolygonTest(points, tip, True)
+    
+    if distances is not None:
+        farthest_index = np.argmax(distances)
+        farthest_point = tuple(points[farthest_index][0])
+        return farthest_point
+    else:
+        return None
 
 def infer(image_in):
     img = cv2.imread(image_in)