//扩散
public static BitmapImage Biffusion(BitmapImage bitmapImae)
{
Bitmap bitmap = HelpClass.BitmapImage2Bitmap(bitmapImae);
int red, green, blue;
int flag = 0;
Color pixel;
for (int i = 0; i < bitmap.Width; i++)
{
for (int j = 0; j < bitmap.Height; j++)
{
Random random = new Random();
int RankKey = random.Next(-5, 5);
if (i + RankKey >= bitmap.Width || j + RankKey >= bitmap.Height || i + RankKey < 0 || j + RankKey < 0)
{
flag = 1;
continue;
}
pixel = bitmap.GetPixel(i + RankKey, j + RankKey);
red = (int)(pixel.R);
green = (int)(pixel.G);
blue = (int)(pixel.B);
bitmap.SetPixel(i, j, Color.FromArgb(red, green, blue));
}
}
return(HelpClass.Bitmap2BitmapImage(bitmap));
}
//暗角
public static BitmapImage Vignetting(BitmapImage bitmapImage)
{
Bitmap bitmap = HelpClass.BitmapImage2Bitmap(bitmapImage);
int width = bitmap.Width;
int height = bitmap.Height;
double cx = width / 2;
double cy = height / 2;
double maxdist = cx * cx + cy * cy;
double currdist = 0, factor;
Color pixel;
for (int i = 0; i < width; i++)
{
for (int j = 0; j < height; j++)
{
currdist = (i - cx) * (i - cx) + (j - cy) * (j - cy);
factor = currdist / maxdist;
pixel = bitmap.GetPixel(i, j);
int red = (int)(pixel.R * (1 - factor));
int green = (int)(pixel.G * (1 - factor));
int blue = (int)(pixel.B * (1 - factor));
bitmap.SetPixel(i, j, Color.FromArgb(red, green, blue));
}
}
return(HelpClass.Bitmap2BitmapImage(bitmap));
}
//去色
//gray = 0.3 * R + 0.59 * G + 0.11 * B
public static BitmapImage Decolorize(BitmapImage bitmapImage)
{
Bitmap bitmap = HelpClass.BitmapImage2Bitmap(bitmapImage);
int gray;
Color pixel;
for (int i = 0; i < bitmap.Width; i++)
{
for (int j = 0; j < bitmap.Height; j++)
{
pixel = bitmap.GetPixel(i, j);
gray = (int)(0.3 * pixel.R + 0.59 * pixel.G + 0.11 * pixel.B);
bitmap.SetPixel(i, j, Color.FromArgb(gray, gray, gray));
}
}
return(HelpClass.Bitmap2BitmapImage(bitmap));
}
//浮雕
public static BitmapImage Relief(BitmapImage bitmapImage)
{
Bitmap bitmap = HelpClass.BitmapImage2Bitmap(bitmapImage);
int red, green, blue;
Color pixel;
for (int i = 0; i < bitmap.Width; i++)
{
for (int j = 0; j < bitmap.Height; j++)
{
pixel = bitmap.GetPixel(i, j);
red = (int)(255 - pixel.R);
green = (int)(255 - pixel.G);
blue = (int)(255 - pixel.B);
bitmap.SetPixel(i, j, Color.FromArgb(red, green, blue));
}
}
return(HelpClass.Bitmap2BitmapImage(bitmap));
}
//马赛克
public static BitmapImage Mosaic(BitmapImage bitmapImage)
{
Bitmap bitmap = HelpClass.BitmapImage2Bitmap(bitmapImage);
int RIDIO = 50;
for (int h = 0; h < bitmap.Height; h += RIDIO)
{
for (int w = 0; w < bitmap.Width; w += RIDIO)
{
int avgRed = 0, avgGreen = 0, avgBlue = 0;
int count = 0;
for (int x = w; (x < w + RIDIO && x < bitmap.Width); x++)
{
for (int y = h; (y < h + RIDIO && y < bitmap.Height); y++)
{
Color pixel = bitmap.GetPixel(x, y);
avgRed += pixel.R;
avgGreen += pixel.G;
avgBlue += pixel.B;
count++;
}
}
avgRed = avgRed / count;
avgGreen = avgGreen / count;
avgBlue = avgBlue / count;
for (int x = w; (x < w + RIDIO && x < bitmap.Width); x++)
{
for (int y = h; (y < h + RIDIO && y < bitmap.Height); y++)
{
bitmap.SetPixel(x, y, Color.FromArgb(avgRed, avgGreen, avgBlue));
}
}
}
}
return(HelpClass.Bitmap2BitmapImage(bitmap));
}