2015-03-26 15:08:31 -0600 | received badge | ● Editor (source) |
2015-03-26 13:20:05 -0600 | asked a question | [c++] VideoCapture always returns a null image Dear folks, I always used VideoCapture to take frames from web cams but since I've used an industrial camera (the david laser scanner one), VideoCapture objects always returns a null image. I've already known I have to change the ID numbers in the VideoCapture constructor but the problem still remains. VideoCapture cap(0); cap>>image; // this function return a null image If I use grap and retrieve bool t = cap.grab(); //returns true t = cap.retrieve(image); //returns false Does anyone know the reason why this problem happens? I tried this new camera using skype and it works perfectly so it should not be neither an HW problem nor an OS driver one. Thank you |