// Obraz wyostrzony maską 3x3
internal void sharpenBitmap(MyBitmap myBitmap)
{
myBitmap.PreviousBitmap = (Bitmap)myBitmap.CurrentBitmap.Clone();
Bitmap sharpenImage = new Bitmap(myBitmap.BitmapInfo.SizeX, myBitmap.BitmapInfo.SizeY);
int filterWidth = 3;
int filterHeight = 3;
int width = myBitmap.BitmapInfo.SizeX;
int height = myBitmap.BitmapInfo.SizeY;
// Tablica maski.
int[,] filter = { { -1, -1, -1 }, { -1, 9, -1 }, { -1, -1, -1 } };
Color[,] result = new Color[width, height];
for (int x = 0; x < width; ++x)
{
for (int y = 0; y < height; ++y)
{
int red = 0, green = 0, blue = 0;
Color imageColor = myBitmap.CurrentBitmap.GetPixel(x, y);
for (int filterX = 0; filterX < filterWidth; filterX++)
{
for (int filterY = 0; filterY < filterHeight; filterY++)
{
int imageX = (x - filterWidth / 2 + filterX + width) % width;
int imageY = (y - filterHeight / 2 + filterY + height) % height;
Color bmpColor = myBitmap.CurrentBitmap.GetPixel(imageX, imageY);
red += bmpColor.R * filter[filterX, filterY];
green += bmpColor.G * filter[filterX, filterY];
blue += bmpColor.B * filter[filterX, filterY];
}
// Ustawiamy wartość na zakres <0,255> jesli nie miesci sie w tym przedziale;
int r = Math.Min(Math.Max(red, 0), 255);
int g = Math.Min(Math.Max(green, 0), 255);
int b = Math.Min(Math.Max(blue, 0), 255);
result[x, y] = Color.FromArgb(r, g, b);
}
}
}
for (int i = 0; i < width; ++i)
{
for (int j = 0; j < height; ++j)
{
sharpenImage.SetPixel(i, j, result[i, j]);
}
}
myBitmap.CurrentBitmap = MyBitmap.convertTo24bpp(sharpenImage);
myBitmap.updateArrays();
}
