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OpenCV : Show Video and Picture in CLion

1. Show Video by using VideoCapture



int main() {
    VideoCapture capture("./res/chat.avi");
    Mat frame;

    if (!capture.isOpened()){
        printf("AVI file can not open\n");
        return 0;
    }

    namedWindow("w", 0); // 0 : resizable, 1 : fit autosize    while(1){
        capture >> frame;
        if (frame.empty()) break;  // when arrive at the end of the video 
        Sobel(frame, frame, frame.depth(), 1, 0); // make color reversal         
        imshow("w", frame);
        if (waitKey(10) == 27) break; // 27 is esc key code number    }
    return 0;
}
 2. Read and Show Picture

int main() {
    Mat img = imread("./res/mh.jpg");
    namedWindow("win", 0);
    imshow("win", img);
    waitKey(0);
    return 0;
}

Warning! : If you use CLion IDE, you should set proper working directory.















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