public static double[,] GetMaskY(EMask name)
{
switch (name)
{
case EMask.Robert:
return(Robertsy);
break;
case EMask.Sobel:
return(Sobely);
break;
case EMask.Prewitt:
return(Prewitty);
break;
default:
return(null);
break;
}
}
public static Bitmap HighPassFilter(EMask name, Bitmap bitmap)
{
Bitmap b = (Bitmap)bitmap.Clone();
double[,] maskx = MaskBox.GetMaskX(name);
double[,] masky = MaskBox.GetMaskY(name);
for (int i = 1; i < bitmap.Width - 1; i++)
{
for (int j = 1; j < bitmap.Height - 1; j++)
{
double sigma = Math.Sqrt(Math.Pow(Convolution(GetArea(new Point(i, j), 3, bitmap), maskx), 2)
+
Math.Pow(Convolution(GetArea(new Point(i, j), 3, bitmap), masky), 2));
byte byt = (byte)(sigma + 0.5);
b.SetPixel(i, j, Color.FromArgb(byt, byt, byt));
}
}
return(b);
}