opencv 从摄像头抓取图片

cv::Mat cvMatImage;

cv::VideoCapture m_VideoCaptureTest;

m_VideoCaptureTest.open(0);

if ( !m_VideoCaptureTest.isOpened() )

{
printf("=====================zienon-opencv failed\n");
return 0;
}

for(int i=0;i<10;i++)

{
m_VideoCaptureTest >> cvMatImage;
char pImagePath[128] = "";
sprintf(pImagePath,"./res/test%d.jpg",i);
cv::imwrite(pImagePath, cvMatImage);
}