opencv_camera.cpp

/**
 * @file        opencv_camera.cpp
 * @brief       OpenCV Camera Capture Program
 * @author      Keitetsu
 * @date        2018/02/24
 * @copyright   Copyright (c) 2018 Keitetsu
 * @par         License
 *              This software is released under the MIT License.
 */

#include <opencv2/opencv.hpp>
#include <iostream>


int main(int argc, const char* argv[])
{
    cv::VideoCapture cap;
    cap.open(0);
    if (!cap.isOpened()) {
        std::cerr << "Failed to open camera device." << std::endl;

        return -1;
    }

    while (1) {
        cv::Mat frame;
        if (!cap.read(frame)) {
            std::cerr << "Failed to capture a frame." << std::endl;

            break;
        }

        cv::imshow("camera", frame);

        int key;
        key = cv::waitKey(1);
        if (key == 27) {
            break;
        }
    }

    cv::destroyAllWindows();

    return 0;
}