Functions for converting among CIE XYZ, xyY, Lab, and Luv. The XYZs of some standard illuminants and some standard linear chromatic adaptation transforms (CATs) are included. Compute CCT and the Planckian and daylight loci. Three different standard color difference metrics are included.
uvfromXYZ(), changed name of argument
DeltaE()added CIE metrics for 1994 and 2000