Update app.py

app.py

@@ -151,7 +151,7 @@ def video_fn(video_in_filepath):
                     category_index,
                     use_normalized_coordinates=True,
                     max_boxes_to_draw=200,
-                    min_score_thresh=.50,
+                    min_score_thresh=.50 if threshold is not None else 0.40,
                     agnostic_mode=False,
                     line_thickness=2)