平台:Windows 10 20H2
Visual Studio 2015
opencv_contrib-3.4.12
转自【opencv七】利用opencv调用电脑摄像头 —— yuanCruise
测试程序
#include <opencv2/opencv.hpp>
#include <iostream>
using namespace cv;
int main()
{
namedWindow("Example", WINDOW_AUTOSIZE);
VideoCapture cap;
cap.open(0);
//VideoCapture cap(0);这句话可以替代上面两个语句,效果是一致的。
if (!cap.isOpened())
{
std::cerr << "Couldn't open capture." << std::endl;
return -1;
}
Mat frame;
while (1)
{
cap >> frame;
if (frame.empty()) break;
imshow("Example", frame);
if (waitKey(33) >= 0) break;
}
waitKey(0);
return 0;
}