#include const std::string WINDOW_NAME = "A Scanner Darkly"; int main(int argc, char** argv ) { cv::VideoCapture cap; cap.open(0); if (!cap.isOpened()) { std::cerr << "Couldn't open capture" << std::endl; return -1; } cv::namedWindow(WINDOW_NAME); cv::Mat frame; while (true) { cap >> frame; cv::imshow(WINDOW_NAME, frame); char c = (char)cv::waitKey(33); if (c == 27) { break; } } cv::destroyWindow(WINDOW_NAME); }