internal static void DKLtoXYZ(ColorDKL dkl, ColorLMS backgroundLMS, ref ColorTransformMatrix DKLtoLMS, ref ColorTransformMatrix LMStoXYZ, out Color1931XYZ xyz)
{
ColorLMS diffLMS;
DKLtoLMS.Transform(dkl.Isochromatic, dkl.RGisoluminant, dkl.Sisoluminant, out diffLMS.L, out diffLMS.M, out diffLMS.S);
ColorLMS stimulusLMS = diffLMS + backgroundLMS;
LMStoXYZ.Transform(stimulusLMS.L, stimulusLMS.M, stimulusLMS.S, out xyz.X, out xyz.Y, out xyz.Z);
}
internal static void XYZtoDKL(Color1931XYZ stimulus, ColorLMS backgroundLMS, ref ColorTransformMatrix XYZtoLMS, ref ColorTransformMatrix LMStoDKL, out ColorDKL dkl)
{
ColorLMS stimulusLMS;
XYZtoLMS.Transform(stimulus.X, stimulus.Y, stimulus.Z, out stimulusLMS.L, out stimulusLMS.M, out stimulusLMS.S);
ColorLMS deltaLMS = stimulusLMS - backgroundLMS;
LMStoDKL.Transform(deltaLMS.L, deltaLMS.M, deltaLMS.S, out dkl.Isochromatic, out dkl.RGisoluminant, out dkl.Sisoluminant);
}