public override Bitmap processImage(Bitmap sourceImage, BackgroundWorker worker)
{
float resultR;
float resultG;
float resultB;
Filters filter = new Closing(mask);
Bitmap result = filter.processImage(sourceImage, worker);
for (int i = 0; i < sourceImage.Width; i++)
{
for (int j = 0; j < sourceImage.Height; j++)
{
resultR = sourceImage.GetPixel(i, j).R - result.GetPixel(i, j).R;
resultG = sourceImage.GetPixel(i, j).G - result.GetPixel(i, j).G;
resultB = sourceImage.GetPixel(i, j).B - result.GetPixel(i, j).B;
result.SetPixel(i, j, Color.FromArgb(
Clamp((int)resultR, 0, 255),
Clamp((int)resultG, 0, 255),
Clamp((int)resultB, 0, 255)));
}
}
return(result);
}