void lab02() {
    // Beolvassuk a színes képet
    Mat im = imread("eper.jpg");
    Mat z(im.rows, im.cols, CV_8UC1, Scalar(0));
    Mat imBig = Mat(im.rows * 3, im.cols * 6, im.type());
    imBig.setTo(Scalar(128, 128, 255, 0));
    int index = 0;
    Mat result = im.clone();

    Mat bgr[3], & b = bgr[0], & g = bgr[1], & r = bgr[2];
    split(im, bgr);
    showMyImage(imBig, result, index);
    //1
    merge(vector<Mat>{z, g, r}, result);
    showMyImage(imBig, result, index);
    merge(vector<Mat>{b, z, r}, result);
    showMyImage(imBig, result, index);
    merge(vector<Mat>{b, g, z}, result);
    showMyImage(imBig, result, index);
    //2
    merge(vector<Mat>{b, z, z}, result);
    showMyImage(imBig, result, index);
    merge(vector<Mat>{z, g, z}, result);
    showMyImage(imBig, result, index);
    merge(vector<Mat>{z, z, r}, result);
    showMyImage(imBig, result, index);
    //3.
    result = im.clone();
    merge(vector<Mat>{b, g, r}, result);
    showMyImage(imBig, result, index);
    merge(vector<Mat>{b, r, g}, result);
    showMyImage(imBig, result, index);
    merge(vector<Mat>{g, b, r}, result);
    showMyImage(imBig, result, index);
    merge(vector<Mat>{g, r, b}, result);
    showMyImage(imBig, result, index);
    merge(vector<Mat>{r, b, g}, result);
    showMyImage(imBig, result, index);
    merge(vector<Mat>{r, g, b}, result);
    showMyImage(imBig, result, index);
    //4
    merge(vector<Mat>{~b,g,r}, result);
    showMyImage(imBig, result, index);
    merge(vector<Mat>{b, ~g, r}, result);
    showMyImage(imBig, result, index);
    merge(vector<Mat>{b, g, ~r}, result);
    showMyImage(imBig, result, index);
    //5
    cvtColor(im, result, COLOR_BGR2YCrCb);
    Mat yCrCb[3], &y = yCrCb[0], &Cr = yCrCb[1], &Cb = yCrCb[2];
    split(result,yCrCb);
    merge(vector<Mat>{~y, Cr, Cb}, result);
    cvtColor(result, result, COLOR_YCrCb2BGR);
    showMyImage(imBig, result, index);
    //6
    merge(vector<Mat>{~b, ~g, ~r}, result);
    showMyImage(imBig, result, index);

    waitKey(0);

}