OpenCV Error: (-215)size.width>0 && size.height>0 in function imshow
sudo modprobe bcm2835-v4l2
https://stackoverflow.com/questions/27953069/opencv-error-215size-width0-size-height0-in-function-imshow
OpenCV Error: (-215)size.width>0 && size.height>0 in function imshow
sudo modprobe bcm2835-v4l2
https://stackoverflow.com/questions/27953069/opencv-error-215size-width0-size-height0-in-function-imshow