public static double CalDistance_CIE76(ColorSpace color1, ColorSpace color2)
{
//double deltaE = color1.Compare(color2, new Cie1976Comparison());
double deltaE = 0;
Lab c1 = color1.To <Lab>();
Lab c2 = color2.To <Lab>();
double _L = (c1.L - c2.L) * (c1.L - c2.L);
double _a = (c1.A - c2.A) * (c1.A - c2.A);
double _b = (c1.B - c2.B) * (c1.B - c2.B);
deltaE = Math.Sqrt(_L + (_a + _b) * 3);
return(deltaE);
}
