public object Clone()
{
var img = EffImage.White(Width, Height);
img.pixels = this.pixels.Clone() as Color[, ];
return(img);
}
/// <summary>
/// 卷积运算
/// </summary>
/// <param name="filterMatrix">矩阵</param>
/// <param name="factor">因子</param>
/// <param name="bias">偏移</param>
public void ConvolutionFilter(double[,] filterMatrix,
double factor = 1,
int bias = 0)
{
EffImage rt = EffImage.White(width, height);
double blue = 0.0;
double green = 0.0;
double red = 0.0;
int filterWidth = filterMatrix.GetLength(1);
int filterHeight = filterMatrix.GetLength(0);
int filterOffset = (filterWidth - 1) / 2;
// TODO : PADDING边角
for (int x = filterOffset; x <
Width - filterOffset; x++)
{
for (int y = filterOffset; y <
Height - filterOffset; y++)
{
blue = green = red = 0d;
for (int filterX = -filterOffset;
filterX <= filterOffset; filterX++)
{
for (int filterY = -filterOffset;
filterY <= filterOffset; filterY++)
{
var color = At(x + filterX, y + filterY);
red += color.R * filterMatrix[filterY + filterOffset, filterX + filterOffset];
green += color.G * filterMatrix[filterY + filterOffset, filterX + filterOffset];
blue += color.B * filterMatrix[filterY + filterOffset, filterX + filterOffset];
}
}
red = red * factor + bias;
green = green * factor + bias;
blue = blue * factor + bias;
if (red > 255)
{
red = 255;
}
else if (red < 0)
{
red = 0;
}
if (green > 255)
{
green = 255;
}
else if (green < 0)
{
green = 0;
}
if (blue > 255)
{
blue = 255;
}
else if (blue < 0)
{
blue = 0;
}
rt.Set(x, y, Color.FromArgb((int)red, (int)green, (int)blue));
}
}
this.pixels = rt.pixels;
}