/// <summary>
/// Perform a Median fiter using a 5x5 Mask
/// </summary>
/// <param name="b">Image to Process</param>
/// <returns>Filtered Image</returns>
public static Bitmap Median5x5(Bitmap b)
{
ImagerBitmap i = new ImagerBitmap(b.Clone() as Bitmap);
ImagerBitmap i2 = new ImagerBitmap(b.Clone() as Bitmap);
for (int column = 2; column < i.Bitmap.Width - 2; column++)
{
for (int row = 2; row < i.Bitmap.Height - 2; row++)
{
Color[,] c = i.Get5x5(row, column);
int red = Median(c[0, 0].R, c[0, 1].R, c[0, 2].R, c[0, 3].R, c[0, 4].R, c[1, 0].R,
c[1, 1].R, c[1, 2].R, c[1, 3].R, c[1, 4].R, c[2, 0].R, c[2, 1].R, c[2, 2].R,
c[2, 3].R, c[2, 4].R, c[3, 0].R, c[3, 1].R, c[3, 2].R, c[3, 3].R, c[3, 4].R,
c[4, 0].R, c[4, 1].R, c[4, 2].R, c[4, 3].R, c[4, 4].R);
int green = Median(c[0, 0].G, c[0, 1].G, c[0, 2].G, c[0, 3].G, c[0, 4].G, c[1, 0].G,
c[1, 1].G, c[1, 2].G, c[1, 3].G, c[1, 4].G, c[2, 0].G, c[2, 1].G, c[2, 2].G,
c[2, 3].G, c[2, 4].G, c[3, 0].G, c[3, 1].G, c[3, 2].G, c[3, 3].G, c[3, 4].G,
c[4, 0].G, c[4, 1].G, c[4, 2].G, c[4, 3].G, c[4, 4].G);
int blue = Median(c[0, 0].B, c[0, 1].B, c[0, 2].B, c[0, 3].B, c[0, 4].B, c[1, 0].B,
c[1, 1].B, c[1, 2].B, c[1, 3].B, c[1, 4].B, c[2, 0].B, c[2, 1].B, c[2, 2].B,
c[2, 3].B, c[2, 4].B, c[3, 0].B, c[3, 1].B, c[3, 2].B, c[3, 3].B, c[3, 4].B,
c[4, 0].B, c[4, 1].B, c[4, 2].B, c[4, 3].B, c[4, 4].B);
i2.SetPixel(column, row, Color.FromArgb(red, green, blue));
}
}
i.UnlockBitmap();
i2.UnlockBitmap();
return i2.Bitmap.Clone() as Bitmap;
}
/// <summary>
/// Perform a Binomial filter using a 5x5 Mask
/// </summary>
/// <param name="b">Image to Process</param>
/// <returns>Filtered Image</returns>
public static Bitmap Binomial5x5(Bitmap b)
{
ImagerBitmap i = new ImagerBitmap(b.Clone() as Bitmap);
ImagerBitmap i2 = new ImagerBitmap(b.Clone() as Bitmap);
for (int column = 2; column < i.Bitmap.Width - 2; column++)
{
for (int row = 2; row < i.Bitmap.Height - 2; row++)
{
Color[,] c = i.Get5x5(row, column);
int red = ((c[0, 0].R * 1) + (c[0, 1].R * 4) + (c[0, 2].R * 6) + (c[0, 3].R * 4)
+ (c[0, 4].R * 1) + (c[1, 0].R * 4) + (c[1, 1].R * 16) + (c[1, 2].R * 24)
+ (c[1, 3].R * 16) + (c[1, 4].R * 4) + (c[2, 0].R * 6) + (c[2, 1].R * 24)
+ (c[2, 2].R * 36) + (c[2, 3].R * 24) + (c[2, 4].R * 6) + (c[3, 0].R * 4)
+ (c[3, 1].R * 16) + (c[3, 2].R * 24) + (c[3, 3].R * 16) + (c[3, 4].R * 4)
+ (c[4, 0].R * 1) + (c[4, 1].R * 4) + (c[4, 2].R * 6) + (c[4, 3].R * 4)
+ (c[4, 4].R * 1)) / 256;
int green = ((c[0, 0].G * 1) + (c[0, 1].G * 4) + (c[0, 2].G * 6) + (c[0, 3].G * 4)
+ (c[0, 4].G * 1) + (c[1, 0].G * 4) + (c[1, 1].G * 16) + (c[1, 2].G * 24)
+ (c[1, 3].G * 16) + (c[1, 4].G * 4) + (c[2, 0].G * 6) + (c[2, 1].G * 24)
+ (c[2, 2].G * 36) + (c[2, 3].G * 24) + (c[2, 4].G * 6) + (c[3, 0].G * 4)
+ (c[3, 1].G * 16) + (c[3, 2].G * 24) + (c[3, 3].G * 16) + (c[3, 4].G * 4)
+ (c[4, 0].G * 1) + (c[4, 1].G * 4) + (c[4, 2].G * 6) + (c[4, 3].G * 4)
+ (c[4, 4].G * 1)) / 256;
int blue = ((c[0, 0].B * 1) + (c[0, 1].B * 4) + (c[0, 2].B * 6) + (c[0, 3].B * 4)
+ (c[0, 4].B * 1) + (c[1, 0].B * 4) + (c[1, 1].B * 16) + (c[1, 2].B * 24)
+ (c[1, 3].B * 16) + (c[1, 4].B * 4) + (c[2, 0].B * 6) + (c[2, 1].B * 24)
+ (c[2, 2].B * 36) + (c[2, 3].B * 24) + (c[2, 4].B * 6) + (c[3, 0].B * 4)
+ (c[3, 1].B * 16) + (c[3, 2].B * 24) + (c[3, 3].B * 16) + (c[3, 4].B * 4)
+ (c[4, 0].B * 1) + (c[4, 1].B * 4) + (c[4, 2].B * 6) + (c[4, 3].B * 4)
+ (c[4, 4].B * 1)) / 256;
i2.SetPixel(column, row, Color.FromArgb(red, green, blue));
}
}
i.UnlockBitmap();
i2.UnlockBitmap();
return i2.Bitmap.Clone() as Bitmap;
}
