public Bitmap getEnergyImage()
        {
            double maxVal = 0;
            int    w      = energyImage.GetLength(0);
            int    h      = energyImage.GetLength(1);

            for (int i = 0; i < w; ++i)
            {
                for (int j = 0; j < h; ++j)
                {
                    maxVal = Math.Max(maxVal, energyImage[i, j]);
                }
            }

            Bitmap     energyResult = new Bitmap(w, h);
            LockBitmap lockEnergy   = new LockBitmap(energyResult);

            lockEnergy.LockBits();
            for (int i = 0; i < w; ++i)
            {
                for (int j = 0; j < h; ++j)
                {
                    int map = (int)((energyImage[i, j] / maxVal) * 255.0);
                    lockEnergy.SetPixel(i, j, Color.FromArgb(map, map, map));
                }
            }
            lockEnergy.UnlockBits();
            return(energyResult);
        }
        private Bitmap createNewImage()
        {
            Bitmap     resultImg = new Bitmap(newWidth, newHeight);
            LockBitmap lockRes   = new LockBitmap(resultImg);

            lockRes.LockBits();
            for (int x = 0; x < newWidth; ++x)
            {
                for (int y = 0; y < newHeight; ++y)
                {
                    lockRes.SetPixel(x, y, imgColors[x, y]);
                }
            }
            lockRes.UnlockBits();
            return(resultImg);
        }