testing-repository/OpenCV_test/test4_display/main.cpp

45 lines
1000 B
C++

#include <opencv2/opencv.hpp>
#include <iostream>
using namespace cv;
int main(int argc, char **argv)
{
// Create capture object to capture video
VideoCapture capture(0);
if (!capture.isOpened())
{
std::cout << "Can't open video device!" << std::endl;
return -1;
}
// properties
double rate = capture.get(CAP_PROP_FPS);
double width = capture.get(CAP_PROP_FRAME_WIDTH);
double height = capture.get(CAP_PROP_FRAME_HEIGHT);
// Information about the camera
std::cout << "Frame Rate = " << rate << "width = " << width << "height = " << height << std::endl;
namedWindow("Video Capture", WINDOW_NORMAL);
Mat frame;
while (1)
{
if (!capture.read(frame))
{
std::cout << "no video frame" << std::endl;
continue;
}
imshow("Video Capture", frame);
int c = waitKey(1);
if(c == 27){
break;
}
}
capture.release();
return 0;
}