Merge pull request #2189 from Wovchena/gesture_recognition-multiprocessing-workaround-for-mac

gesture_recognition: workaround multiprocessing for mac

Author: Roman Donchenko

demos/gesture_recognition_demo/python/gesture_recognition_demo.py

@@ -20,6 +20,7 @@
 import time
 import json
 import os
+import multiprocessing
 from argparse import ArgumentParser, SUPPRESS
 
 import cv2
@@ -251,4 +252,7 @@ def main():
 
 
 if __name__ == '__main__':
+    # https://github.com/opencv/opencv/issues/5150#issuecomment-197413178
+    # https://github.com/opencv/opencv/issues/5150#issuecomment-197540235
+    multiprocessing.set_start_method('spawn')
     sys.exit(main() or 0)

demos/tests/run_tests.py

@@ -230,5 +230,5 @@ def option_to_args(key, value):
 
     sys.exit(0 if num_failures == 0 else 1)
 
-if __name__ == main():
+if __name__ == '__main__':
     main()