public static void Gray(BMPImage image)
{
for (int x = 0; x < image.Width; x++)
{
for (int y = 0; y < image.Height; y++)
{
Pixel pixel = image.GetPixel(x, y);
int sum = pixel.Red + pixel.Green + pixel.Blue;
pixel.Red = pixel.Green = pixel.Blue = (byte)(sum / 3);
image.SetPixel(pixel, x, y);
}
}
}
public static void UseMatrix(BMPImage image, float[,] kernel)
{
float red;
float green;
float blue;
Pixel[,] copy = new Pixel[image.Width, image.Height];
for (int x = 1; x < image.Width - 1; x++)
{
for (int y = 1; y < image.Height - 1; y++)
{
red = 0;
green = 0;
blue = 0;
for (int i = 0; i < 3; i++)
{
for (int j = 0; j < 3; j++)
{
red += image.GetPixel(x + i - 1, y + j - 1).Red *kernel[i, j];
green += image.GetPixel(x + i - 1, y + j - 1).Green *kernel[i, j];
blue += image.GetPixel(x + i - 1, y + j - 1).Blue *kernel[i, j];
}
}
red = Math.Abs(red);
green = Math.Abs(green);
blue = Math.Abs(blue);
copy[x, y] = new Pixel((byte)red, (byte)green, (byte)blue);
}
}
for (int x = 1; x < image.Width - 1; x++)
{
for (int y = 1; y < image.Height - 1; y++)
{
image.SetPixel(copy[x, y], x, y);
}
}
}
public static void Median(BMPImage image)
{
byte[] red = new byte[9];
byte[] green = new byte[9];
byte[] blue = new byte[9];
Pixel[,] copy = new Pixel[image.Width, image.Height];
for (int x = 1; x < image.Width - 1; x++)
{
for (int y = 1; y < image.Height - 1; y++)
{
for (int i = 0; i < 3; i++)
{
for (int j = 0; j < 3; j++)
{
red[3 * i + j] = image.GetPixel(x + i - 1, y + j - 1).Red;
green[3 * i + j] = image.GetPixel(x + i - 1, y + j - 1).Green;
blue[3 * i + j] = image.GetPixel(x + i - 1, y + j - 1).Blue;
}
}
Array.Sort(red);
Array.Sort(green);
Array.Sort(blue);
copy[x, y] = new Pixel(red[4], green[4], blue[4]);
}
}
for (int x = 1; x < image.Width - 1; x++)
{
for (int y = 1; y < image.Height - 1; y++)
{
image.SetPixel(copy[x, y], x, y);
}
}
}