add fullscreen command line option

Author: tobybreckon

canny.py

@@ -44,6 +44,11 @@
     type=int,
     nargs=2,
     help='override default camera resolution as H W')
+parser.add_argument(
+    "-fs",
+    "--fullscreen",
+    action='store_true',
+    help="run in full screen mode")
 parser.add_argument(
     'video_file',
     metavar='video_file',
@@ -96,6 +101,8 @@ def nothing(x):
 
     cv2.namedWindow(window_name, cv2.WINDOW_NORMAL)
     cv2.namedWindow(window_name2, cv2.WINDOW_NORMAL)
+    cv2.setWindowProperty(window_name2, cv2.WND_PROP_FULLSCREEN,
+                          cv2.WINDOW_FULLSCREEN & args.fullscreen)
 
     # add some track bar controllers for settings