colour.Hunter_Lab_to_XYZ#
- colour.Hunter_Lab_to_XYZ(Lab: ArrayLike, XYZ_n: ArrayLike = TVS_ILLUMINANTS_HUNTERLAB['CIE 1931 2 Degree Standard Observer']['D65'].XYZ_n, K_ab: ArrayLike | None = TVS_ILLUMINANTS_HUNTERLAB['CIE 1931 2 Degree Standard Observer']['D65'].K_ab) NDArrayFloat [source]#
Convert from Hunter L,a,b colour scale to CIE XYZ tristimulus values.
- Parameters:
Lab (ArrayLike) – Hunter L,a,b colour scale array.
XYZ_n (ArrayLike) – Reference illuminant tristimulus values.
K_ab (ArrayLike | None) – Reference illuminant chromaticity coefficients, if
K_ab
is set to None it will be computed usingcolour.XYZ_to_K_ab_HunterLab1966()
.
- Returns:
CIE XYZ tristimulus values.
- Return type:
Notes
Domain
Scale - Reference
Scale - 1
Lab
L
: [0, 100]a
: [-100, 100]b
: [-100, 100]L
: [0, 1]a
: [-1, 1]b
: [-1, 1]XYZ_n
[0, 100]
[0, 1]
Range
Scale - Reference
Scale - 1
XYZ
[0, 100]
[0, 1]
References
Examples
>>> Lab = np.array([34.92452577, 47.06189858, 14.38615107]) >>> D65 = TVS_ILLUMINANTS_HUNTERLAB["CIE 1931 2 Degree Standard Observer"]["D65"] >>> Hunter_Lab_to_XYZ(Lab, D65.XYZ_n, D65.K_ab) array([ 20.654008, 12.197225, 5.136952])