void labeling()
{
    Mat src;
    // Read image from file
    char fname[MAX_PATH];
    while (openFileDlg(fname))
    {
        src = imread(fname,CV_LOAD_IMAGE_GRAYSCALE);
        //Create a window
        namedWindow("My Window", 1);

        int width = src.cols;
        int height = src.rows;

    //generare paleta de culori
    Scalar colorLUT[1000] = { 0 };
    Scalar color;
        for (int i = 1; i < 1000; i++)
        {
            Scalar color(rand() & 255, rand() & 255, rand() & 255);
            colorLUT[i] = color;

        }
        colorLUT[0] = Scalar(255,255,255); // fundalul va fi alb

    Mat labels = Mat::zeros(src.size(), CV_16SC1); //matricea de etichete
    Mat dst = Mat::zeros(src.size(), CV_8UC3); //matricea destinatie pt. afisare

    printf("%d %d", labels.rows, labels.cols);

    //Procesare (labeling) ….
    int label = 0;
    for (int i = 1; i < height - 1; i++)
        for (int j = 1; j < width - 1; j++)
        {
            if (src.at<uchar>(i, j) == 0 && labels.at<short>(i, j) == 0)
            {
                label++;
                short newLabel = label % 1000;
                labels.at<short>(i, j) = newLabel;
                queue<Point2i> Q;
                Q.push({ i, j });
                while (!Q.empty())
                {
Point2i q = Q.front();

                    Q.pop();
                    for (int k = -1; k <= 1; k++)
                        for (int m = -1; m <= 1;m++)
                        {
                        int x = q.x + k;
                        int y = q.y + m;
                        if(src.at<uchar>(x,y)== 0 && labels.at<short>(x, y) == 0)
                        {
                            labels.at<short>(x, y) = newLabel;
                            Q.push({ x, y });
                        }
                    }

                }
            }
        }



    for (int i = 1; i < height - 1; i++)
    for (int j = 1; j < width - 1; j++)
        {
            Scalar color = colorLUT[labels.at<short>(i, j)]; // valabil pt. Met. 1 BFS
            dst.at<Vec3b>(i, j)[0] = (uchar)color[0];
            dst.at<Vec3b>(i, j)[1] = (uchar)color[1];
            dst.at<Vec3b>(i, j)[2] = (uchar)color[2];
        }


    //show the image
    imshow("My Window", src);
    imshow("Label photo", dst);

    // Wait until user press some key
    waitKey(0);
    }


}