colour.XYZ_to_K_ab_HunterLab1966¶

colour.XYZ_to_K_ab_HunterLab1966(XYZ: ArrayLike) → numpy.ndarray[source]¶

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

Parameters: XYZ (ArrayLike) – Whitepoint CIE XYZ tristimulus values.
Returns: Hunter L,a,b \(K_{a}\) and \(K_{b}\) chromaticity coefficients.
Return type: numpy.ndarray

References

Examples

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

colour.Hunter_Lab_to_XYZ

colour.XYZ_to_Hunter_Rdab