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How to display a single frame from a webcam stream with the press of a key? It's showing assertion failed when I tried to compile the code.

include "opencv2/highgui/highgui.hpp"

include <iostream>

include "opencv2/opencv.hpp"

using namespace cv; using namespace std; int main(int, char**) { VideoCapture capturo(0); Mat img1, img2; int input; namedWindow("Image 1",CV_WINDOW_AUTOSIZE); namedWindow("Image 2",CV_WINDOW_AUTOSIZE); for(;;){ char input = cvWaitKey(33); if(input == 27) break; if (input == 49) { img1= capturo.grab(); cv::imshow("Image 1",img1); } if (input == 50){ img2= capturo.grab(); cv::imshow("Image 2",img2); } } return 0; }

Please tell what am I doing wrong here.

How to display a single frame from a webcam stream with the press of a key? It's showing assertion failed when I tried to compile the code.

include "opencv2/highgui/highgui.hpp"

include <iostream>

include "opencv2/opencv.hpp"

       #include "opencv2/highgui/highgui.hpp" 
       #include <iostream> 
       #include "opencv2/opencv.hpp" 
       using namespace cv;
 using namespace std;
 int main(int, char**)
 { VideoCapture capturo(0);
 Mat img1, img2;
 int input;
 namedWindow("Image 1",CV_WINDOW_AUTOSIZE);
 namedWindow("Image 2",CV_WINDOW_AUTOSIZE);
 for(;;){
 char input = cvWaitKey(33);
 if(input == 27) break;
 if (input == 49)
 { img1= capturo.grab();
 cv::imshow("Image 1",img1); }
  if (input == 50){
 img2= capturo.grab();
 cv::imshow("Image 2",img2); } }
 return 0; }

}

Please tell what am I doing wrong here.here. I guess the first few frames is not read so the error is coming up. Can you please give a solution for this?