opencv双摄像头采集图像（可用作双目视觉的标定图片制作）

环境：opencv2.4.9 + vs2013
代码：#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv/cv.h>
using namespace std;
using namespace cv;

int main()
{
VideoCapture capture, capture1, capture2;
capture.open(0); capture1.open(1); capture2.open(2);
// Read options
//read_options(argc, argv, capture);
// Init camera
if (!capture.isOpened())
{
cout << "capture device 0 failed to open!" << endl;
return 1;
}
if (!capture1.isOpened())
{
cout << "capture device 1 failed to open!" << endl;
return 1;
}
if (!capture2.isOpened())
{
cout << "capture device 2 failed to open!" << endl;
return 1;
}
// Register mouse callback to draw the tracking box
namedWindow("0", CV_WINDOW_AUTOSIZE);
namedWindow("1", CV_WINDOW_AUTOSIZE);
namedWindow("2", CV_WINDOW_AUTOSIZE);
char filename_l[15];
char filename_r[15];
int i = 0;
Mat frame;
Mat frame1;
Mat frame2;
while (capture.read(frame) && capture1.read(frame1) && capture2.read(frame2))
{

imshow("0", frame);
imshow("1", frame1);
imshow("2", frame2);
char c = cv::waitKey(1);
if (cvWaitKey(10) == 'c') //按c采集图像
{
sprintf(filename_l, "left%d.jpg", i);
imwrite(filename_l, frame);
sprintf(filename_r, "right%d.jpg", i++);
imwrite(filename_r, frame1);
}
if (cvWaitKey(33) == 'q') { break; }
}

waitKey();
return 0;
}说明：可通过按键C控制截取帧