public static Color LABtoRGB(cLAB LAB)
{
cXYZ xyz = LABtoXYZ(LAB);
Color rgb = XYZtoRGB(xyz);
return(rgb);
}
public static double XYZtoDelta(cXYZ c1, cXYZ c2)
{
cLAB lab1 = XYZtoLAB(c1);
cLAB lab2 = XYZtoLAB(c2);
return(LABtoDelta(lab1, lab2));
}
public static cLAB RGBtoLAB(Color rgb)
{
cXYZ xyz = RGBtoXYZ(rgb.R, rgb.G, rgb.B);
cLAB lab = XYZtoLAB(xyz);
return(lab);
}
public static Color LABtoRGB(double L, double a, double b)
{
cXYZ xyz = LABtoXYZ(L, a, b);
Color rgb = XYZtoRGB(xyz);
return(rgb);
}
public static cLAB RGBtoLAB(int r, int g, int b)
{
cXYZ xyz = RGBtoXYZ(r, g, b);
cLAB lab = XYZtoLAB(xyz);
return(lab);
}
public static cXYZ LABtoXYZ(double L, double a, double b)
{
double _Y = (L + 16d) / 116d;
double _X = a / 500d + _Y;
double _Z = _Y - b / 200d;
_X = Math.Pow(_X, 3d) > 0.008856d ? Math.Pow(_X, 3d) : (_X - 16d / 116d) / 7.787d;
_Y = Math.Pow(_Y, 3d) > 0.008856d ? Math.Pow(_Y, 3d) : (_Y - 16d / 116d) / 7.787d;
_Z = Math.Pow(_Z, 3d) > 0.008856d ? Math.Pow(_Z, 3d) : (_Z - 16d / 116d) / 7.787d;
cXYZ xyz = new cXYZ();
xyz.X = 95.047d * _X;
xyz.Y = 100d * _Y;
xyz.Z = 108.883d * _Z;
return(xyz);
}
public static cXYZ RGBtoXYZ(int r, int g, int b)
{
double _R = r / 255d;
double _G = g / 255d;
double _B = b / 255d;
_R = (_R > 0.04045d ? Math.Pow((_R + 0.055d) / 1.055d, 2.4d) : _R / 12.92d) * 100d;
_G = (_G > 0.04045d ? Math.Pow((_G + 0.055d) / 1.055d, 2.4d) : _G / 12.92d) * 100d;
_B = (_B > 0.04045d ? Math.Pow((_B + 0.055d) / 1.055d, 2.4d) : _B / 12.92d) * 100d;
cXYZ xyz = new cXYZ();
xyz.X = _R * 0.4124d + _G * 0.3576d + _B * 0.1805d;
xyz.Y = _R * 0.2126d + _G * 0.7152d + _B * 0.0722d;
xyz.Z = _R * 0.0193d + _G * 0.1192d + _B * 0.9505d;
return(xyz);
}
public static cXYZ LABtoXYZ(cLAB LAB)
{
cXYZ xyz = LABtoXYZ(LAB.L, LAB.a, LAB.b);
return(xyz);
}
public static Color XYZtoRGB(cXYZ XYZ)
{
Color rgb = XYZtoRGB(XYZ);
return(rgb);
}
public static cLAB XYZtoLAB(cXYZ XYZ)
{
cLAB lab = XYZtoLAB(XYZ.X, XYZ.Y, XYZ.Z);
return(lab);
}
public static cXYZ RGBtoXYZ(Color rgb)
{
cXYZ xyz = RGBtoXYZ(rgb.R, rgb.G, rgb.B);
return(xyz);
}