// opencv6_videocapturefromcamera.cpp : 此文件包含 "main" 函数。程序执行将在此处开始并结束。
//
#include <iostream>
//#include <opencv2/opencv.hpp>
#include <opencv2/highgui.hpp>
#include <opencv2/videoio.hpp>
#include <opencv2/imgproc.hpp>
using namespace cv;
using namespace std;
//debug下在lib文件的名称后加d，release下不加d。
int main()
{
VideoCapture capture(0); // 0为电脑自带摄像头
/*capture.open(0);*/
if (capture.isOpened())
{
cout << "已打开摄像头" << endl;
}
else
{
cout << "摄像头打开失败" << endl;
}
while (1)
{
Mat frame;
capture >> frame; //读取当前帧
if (frame.data == NULL)
break;
imshow("读取视频的当前帧", frame);
Mat edges;
cvtColor(frame, edges, COLOR_BGR2GRAY); //转为灰图
blur(edges, edges, Size(8, 8)); //降噪
Canny(edges, edges, 3, 9, 3); //边缘检测
imshow("边缘检测效果", edges);
if (waitKey(30) >= 0)
break;
}
capture.release();
return 0;
}
