public override Image ToGray(GrayscaleConversionMethod method = GrayscaleConversionMethod.ARITHMETIC_MEAN)
{
ImageGray <T> grayImage = (ImageGray <T>)ImageFactory.Create(Width, Height, ColorModel.GRAY, GetDataType());
Func <double, double, double, double> conversionFunction;
switch (method)
{
case GrayscaleConversionMethod.GEOMETRIC_MEAN:
conversionFunction = (r, g, b) => Math.Pow(r * g * b, 1.0 / 3.0);
break;
case GrayscaleConversionMethod.HARMONIC_MEAN:
conversionFunction = (r, g, b) => 3.0 / (1.0 / r + 1.0 / g + 1.0 / b);
break;
default:
conversionFunction = (r, g, b) => (r + g + b) / 3.0;
break;
}
for (int x = 0; x < Width; x++)
{
for (int y = 0; y < Height; y++)
{
grayImage.SetPixelValueFromDouble(x, y, conversionFunction(Convert.ToDouble(R.Pixels[x, y]), Convert.ToDouble(G.Pixels[x, y]), Convert.ToDouble(B.Pixels[x, y])));
}
}
return(grayImage);
}
public override Image ToGray(GrayscaleConversionMethod method = GrayscaleConversionMethod.ARITHMETIC_MEAN)
{
return(Clone());
}
public override Image ToGray(GrayscaleConversionMethod method = GrayscaleConversionMethod.ARITHMETIC_MEAN)
{
return(ToRGB().ToGray(method));
}
public abstract Image ToGray(GrayscaleConversionMethod method = GrayscaleConversionMethod.ARITHMETIC_MEAN);
