int* calculvector(unsigned char* img, int w, int h, int hh)
{
    int *hist = new int[256];
    for (int i = 0;i < 256;++i)
    {
        hist[i] = 0;
    }
    for (int y = 0; y < h; y++)
        for (int x = 0; x < w; x++)
        {
            hist[(int)img[y*w + x]]++;
        }
    int max = *max_element(hist, hist + 255);
    for (int i = 0;i < 256;++i)
    {
        hist[i] = (int)hist[i] / (double)max * hh;
        cout << hist[i] << " ";
    }
    return hist;
}