OpenCV 2-cams view sample source code

This source is advanced from http://feelmare.blogspot.kr/2013/09/opencv-video-capture-using-videocapture.html.

/////

void main()
{
 VideoCapture stream1(0);   //0 is the id of video device.0 if you have only one camera
 VideoCapture stream2(1);   //0 is the id of video device.0 if you have only one camera
 
 if (!stream1.isOpened()) { //check if video device has been initialised
  cout << "cannot open camera 1";
 }

 if (!stream2.isOpened()) { //check if video device has been initialised
  cout << "cannot open camera 2";
 }


 namedWindow("Processing");
 namedWindow("CAM1");
 namedWindow("CAM2");


 //unconditional loop
 while (true) {
  Mat cameraFrame1;
  stream1.read(cameraFrame1); //get one frame form video
  imshow("CAM1", cameraFrame1);

  Mat cameraFrame2;
  stream2.read(cameraFrame2); //get one frame form video
  imshow("CAM2", cameraFrame2);

  

  if (waitKey(30) >= 0)
   break;
 }

 destroyAllWindows();
 
 
}

/////