public static double diff(Color color1, Color color2)
{
LabColor lab1 = LabColorTransform.RgbToLab(color1);
LabColor lab2 = LabColorTransform.RgbToLab(color2);
return(Math.Sqrt((lab2.L - lab1.L) * (lab2.L - lab1.L) + (lab2.A - lab1.A) * (lab2.A - lab1.A) + (lab2.B - lab1.B) * (lab2.B - lab1.B)));
}
public static Color XyzToRgb(XyzColor xyz)
{
double var_X = xyz.X / 100; //X from 0 to 95.047 (Observer = 2°, Illuminant = D65)
double var_Y = xyz.Y / 100f; //Y from 0 to 100.000
double var_Z = xyz.Z / 100f; //Z from 0 to 108.883
double var_R = var_X * 3.2406f + var_Y * -1.5372f + var_Z * -0.4986f;
double var_G = var_X * -0.9689f + var_Y * 1.8758f + var_Z * 0.0415f;
double var_B = var_X * 0.0557f + var_Y * -0.2040f + var_Z * 1.0570f;
if (var_R > 0.0031308f)
{
var_R = 1.055f * (Math.Pow(var_R, 1f / 2.4f)) - 0.055f;
}
else
{
var_R = 12.92f * var_R;
}
if (var_G > 0.0031308f)
{
var_G = 1.055f * (Math.Pow(var_G, 1f / 2.4f)) - 0.055f;
}
else
{
var_G = 12.92f * var_G;
}
if (var_B > 0.0031308f)
{
var_B = 1.055f * (Math.Pow(var_B, 1f / 2.4f)) - 0.055f;
}
else
{
var_B = 12.92f * var_B;
}
return(Color.FromArgb(
LabColorTransform.Range((int)Math.Round(var_R * 255f, 0f), 0, 0xff),
LabColorTransform.Range((int)Math.Round(var_G * 255f, 0f), 0, 0xff),
LabColorTransform.Range((int)Math.Round(var_B * 255f, 0f), 0, 0xff)));
}
public static Color LabToRgb(LabColor lab)
{
return(LabColorTransform.LabToRgb(lab));
}
public static LabColor RgbToLab(Color rgb)
{
return(LabColorTransform.RgbToLab(rgb));
}
public static Color XyzToRgb(XyzColor xyz)
{
return(LabColorTransform.XyzToRgb(xyz));
}
public static XyzColor LabToXyz(LabColor lab)
{
return(LabColorTransform.LabToXyz(lab));
}
public static XyzColor RgbToXyz(Color rgb)
{
return(LabColorTransform.RgbToXyz(rgb));
}
