一、打开显示图片
#include<opencv2/opencv.hpp>
#include<iostream>
using namespace std;
using namespace cv;
int main(int argc, char** argv)
{
Mat src = imread("C:/Users/91955/Desktop/Examples/Cat.jpg");
if (src.empty()) {
printf("error\n");
return -1;
}
namedWindow("input", CV_WINDOW_AUTOSIZE);
imshow("input", src);
waitKey(0);
return 0;
}
二、打开视频或摄像头
#include <opencv2/opencv.hpp >
using namespace cv;
int main()
{
VideoCapture capture(0);
while (1)
{
Mat frame;
capture >> frame;
imshow("读取视频", frame);
waitKey(30);
}
system("pause");
return 0;
}