private Color GetFilteredColor(Bitmap source, int x, int y, int fi, WeightedColor[,,] colorMap)
{
int w = source.Width, h = source.Height;
double r = 0, g = 0, b = 0;
for (int u = x - fi; u <= x + fi; u++)
{
for (int v = y - fi; v <= y + fi; v++)
{
if (u >= 0 && u < w && v >= 0 && v < h)
{
int wx = Math.Abs(u - x), wy = Math.Abs(v - y);
int wVersion;
if (wx == wy && wx != 0)
{
wVersion = fi + wx;
}
else
{
wVersion = wx > wy ? wx : wy;
}
WeightedColor tmpC = colorMap[wVersion, u, v];
r += tmpC.R;
g += tmpC.G;
b += tmpC.B;
}
}
}
r = r > 255 ? 255 : r;
g = g > 255 ? 255 : g;
b = b > 255 ? 255 : b;
return(Color.FromArgb((int)r, (int)g, (int)b));
}
public static WeightedColor FromRGB(double r, double g, double b)
{
WeightedColor we = new WeightedColor();
we.R = r; we.G = g; we.B = b;
return(we);
}
private WeightedColor[,,] GetWeightedColor(Bitmap source, int fi, int px, int py, int sx, int sy)
{
WeightedColor[,,] retVal = new WeightedColor[fi + 1 + fi, source.Width, source.Height];
double r = 0, g = 0, b = 0;
//遍历整个图片
for (int i = 0; i < source.Width; i++)
{
for (int j = 0; j < source.Height; j++)
{
for (int k = 0; k < fi + 1 + fi; k++)
{
Color c = source.GetPixel(i, j);
double weight;
if (i > px + 2 && i < px + sx - 2 && j > py + 2 && j < py + sy - 2)
{
if (k < fi + 1)
{
weight = GAUSS[fi, fi + k];
}
else
{
weight = GAUSS[k, k];
}
r = c.R * weight;
g = c.G * weight;
b = c.B * weight;
r = r > 255 ? 255 : r;
g = g > 255 ? 255 : g;
b = b > 255 ? 255 : b;
retVal[k, i, j] = WeightedColor.FromRGB(r, g, b);
}
else
{
r = c.R;
g = c.G;
b = c.B;
retVal[k, i, j] = WeightedColor.FromRGB(r, g, b);
}
}
}
}
return(retVal);
}
