opencv+c++调用摄像头并且拍照自动生成图片存放在本地

#include <opencv2/core.hpp> 

#include <opencv2/imgcodecs.hpp> 

#include <opencv2/highgui.hpp>

#include <opencv2/opencv.hpp> 

#include <iostream> 

 using namespace cv; 

using namespace std; 

int main() 

{ 

 //两个相机同时打开，初始化并分配内存以从摄像机加载视频流，分辨率为320*240、1280*720（延迟太大）、720*480 

 //initialize and allocate memory to load the video stream from camera 

VideoCapture camera0(0);

camera0.set(CAP_PROP_FRAME_WIDTH, 720); 

camera0.set(CAP_PROP_FRAME_HEIGHT, 480); 

VideoCapture camera1(1);

camera1.set(CAP_PROP_FRAME_WIDTH, 720); 

camera1.set(CAP_PROP_FRAME_HEIGHT, 480); 

if (!camera0.isOpened()) return 1; 

if (!camera1.isOpened()) return 1;

int a = 1; 

int f = 1; 

  while (true) { 

   //依次抓取和检索视频的每个帧 

   //grab and retrieve each frames of the video sequentially 

   Mat3b frame0; 

   camera0 >> frame0; 

   Mat3b frame1; 

   camera1 >> frame1; 

   //顺时针旋转摄像头180° 

   //flip(frame1, frame1, -1); 

   //flip(frame0, frame0, -1); 

   imshow("Video0", frame0);

   imshow("Video1", frame1);

   //std::cout << frame1.rows() << std::endl; 

   //wait for 40 milliseconds 

    int c = waitKey(20); 

    //exit the loop if user press "Esc" key (ASCII value of "Esc" is 27)

    if (27 == char(c)) break; 

int b = waitKey(20);

    if (32 == char(b)) { 

        imwrite("C:\\Users\\11815\\Desktop\\calib_example1\\" + to_string(a++) + ".tif", frame1); 

     } 

    int d = waitKey(20); 

     if (13 == char(d)) 

       { 

         imwrite("C:\\Users\\11815\\Desktop\\calib_example2\\" + to_string(f++) + ".tif", frame0); 

        } 

    } 

 return 0; 

}

效果：