操作视频-对视频进行canny边缘检测

#include<opencv2/opencv.hpp>
using namespace cv;

int main()
{
    VideoCapture capture();        //从摄像头读入视频
    Mat edges;

    while ()
    {
        Mat frame;       //定义一个Mat变量读取当前帧
        capture >> frame;  //读取当前帧
        cvtColor(frame, edges, COLOR_BGR2GRAY);  //转化为灰度图
        blur(edges, edges, Size(, ));   //均值模糊
        Canny(edges, edges, , , );    //进行canny边缘检测
        imshow("读取摄像头", edges);
        waitKey();
    }
    return ;
}

显示效果：