Update app.py

app.py

@@ -261,6 +261,7 @@ def rgb2gray(rgb):
     return np.dot(rgb[...,:3], [0.333, 0.333, 0.333])
 
 def get_mesh(image, depth, blur_data, loadall):
+    global frame_selected
     global mesh
     global mesh_n
     global scene