colour.XYZ_to_K_ab_HunterLab1966

colour.XYZ_to_K_ab_HunterLab1966(XYZ)[source]

Converts from whitepoint CIE XYZ tristimulus values to Hunter L,a,b \(K_{a}\) and \(K_{b}\) chromaticity coefficients.

Parameters

XYZ (array_like) – Whitepoint CIE XYZ tristimulus values.

Returns

Hunter L,a,b \(K_{a}\) and \(K_{b}\) chromaticity coefficients.

Return type

ndarray

References

[HunterLab08b]

Examples

>>> XYZ = np.array([109.850, 100.000, 35.585])
>>> XYZ_to_K_ab_HunterLab1966(XYZ)  
array([ 185.2378721...,   38.4219142...])