private byte[] GetAdditiveMultiplicatedPixel(byte[] values, int byteLength, double[] matrix)
{
var RGBColors = PixelOperations.TransformPixelArrayToColorArray(values, byteLength);
double red = 0;
double green = 0;
double blue = 0;
double sum = 0;
for (int i = 0; i < 9; i++)
{
red += RGBColors[i].R * matrix[i];
green += RGBColors[i].G * matrix[i];
blue += RGBColors[i].B * matrix[i];
sum += matrix[i];
}
if (sum <= 0)
{
sum = 1;
}
red /= sum;
if (red < 0)
{
red = 0;
}
if (red > 255)
{
red = 255;
}
green /= sum;
if (green < 0)
{
green = 0;
}
if (green > 255)
{
green = 255;
}
blue /= sum;
if (blue < 0)
{
blue = 0;
}
if (blue > 255)
{
blue = 255;
}
Color color = Color.FromArgb(RGBColors[4].A, (int)red, (int)green, (int)blue);
byte[] pixel = PixelOperations.TransformColorToPixel(color, byteLength);
return(pixel);
}
private byte[] GetMedian(byte[] values, int byteLength, int pixelCount)
{
List <Color> RGBColors = PixelOperations.TransformPixelArrayToColorArray(values, byteLength).ToList();
RGBColors.Sort((x, y) => x.GetBrightness().CompareTo(y.GetBrightness()));
Color color = RGBColors[pixelCount * pixelCount / 2];
byte[] pixel = PixelOperations.TransformColorToPixel(color, byteLength);
return(pixel);
}
private byte[] GetMonohromePixel(byte[] pixel, int byteLength, int coefficient)
{
Color color = PixelOperations.TransformPixelToColor(pixel, byteLength);
Color newColor;
if ((color.B + color.G + color.R) / 3 < coefficient)
{
newColor = SetNewColor(color, secondColor);
}
else
{
newColor = SetNewColor(color, firstColor);
}
pixel = PixelOperations.TransformColorToPixel(newColor, byteLength);
return(pixel);
}
