private void Blur()
{
Bitmap bmp = Screenshot.TakeSnapshot(this);
BitmapFilter.GaussianBlur(bmp, 0);
pb.Image = bmp;
pb.SendToBack();
}
public static bool GaussianBlur(Bitmap b, int nWeight /* default to 4*/)
{
ConvMatrix m = new ConvMatrix();
m.SetAll(1);
m.Pixel = nWeight;
m.TopMid = m.MidLeft = m.MidRight = m.BottomMid = 2;
m.Factor = nWeight + 12;
return(BitmapFilter.Conv3x3(b, m));
}