OpenCV Open Camera 打开摄像头

这是一个用OpenCV2.4.10打开摄像头的一个例子，参见代码如下：

#include

#include

#include

using namespace cv;

using namespace std;

int main(int argc, char *argv[])

{

CvCapture* cam0 = cvCaptureFromCAM(0);

if(!cam0)

{

fprintf(stderr, "Could not initialize opening of Camera 0..\n");

system("Pause");

return -1;

}

printf("cam0 initialized\n");

cvNamedWindow("Camera 0",CV_WINDOW_AUTOSIZE); //create a window called "Camera 0"

while (1)

{

IplImage *cam0Frame = cvQueryFrame(cam0);

if (cam0Frame) {

cvShowImage("Camera 0", cam0Frame);

}

if (cvWaitKey(30) == 27) //wait for 'Esc' key press for 30ms. If 'Esc' key is pressed, break loop

{

cout << "Esc key is pressed by user" << endl;

break;

}

}

cvReleaseCapture(&cam0);

cvDestroyWindow("Camera 0");

return 0;

}

如果想同时打开两个摄像头，可以参见我之前的博客OpenCV show two cameras 同时显示两个摄像头。

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