... chromaticity coordinate x10, y10, z10;lightness L*;chrominance a*, b*;chromaticity C*ab;hue angle h*ab; ... hue difference ΔH*ab, Hunter system L, a,b.2.Measure ISO(R457)and Rz3. Measure CIE (W10 ... design can ensure accurate and stable measurement data.2. Simulate D65 illuminator to illuminate. Adopted CIE ... standard colorimetric system and CIE 1976 (L*a*b) color space and color difference formula.3 ...