static public Bitmap ProportionMask(Bitmap original, Color sample, double accuracy)
{
ProportionRGB proportion = new ProportionRGB(sample);
Func <Color, Color> func =
col => new ProportionRGB(col).ApproximatelyEqualTo(proportion, accuracy) ?
Color.White : Color.Black;
return(ProcessPixels(original, func));
}
public bool ApproximatelyEqualTo(ProportionRGB other, double accuracy)
{
if (this.ProportionR < other.ProportionR - accuracy || this.ProportionR > other.ProportionR + accuracy)
{
return(false);
}
if (this.ProportionG < other.ProportionG - accuracy || this.ProportionG > other.ProportionG + accuracy)
{
return(false);
}
if (this.ProportionB < other.ProportionB - accuracy || this.ProportionB > other.ProportionB + accuracy)
{
return(false);
}
return(true);
}