colour.ProLab_to_XYZ#

colour.ProLab_to_XYZ(ProLab: ArrayLike, illuminant: ArrayLike = CCS_ILLUMINANTS['CIE 1931 2 Degree Standard Observer']['D65']) → NDArrayFloat[source]#

Convert from ProLab colourspace to CIE XYZ tristimulus values.

Parameters:

  • ProLab (ArrayLike) – ProLab colourspace array.

  • illuminant (ArrayLike) – Reference illuminant CIE xy chromaticity coordinates or CIE xyY colourspace array.

Returns:

CIE XYZ tristimulus values.

Return type:

numpy.ndarray

Notes

Domain

Scale - Reference

Scale - 1

Lab

L : [0, 1]

a : [-1, 1]

b : [-1, 1]

L : [0, 1]

a : [-1, 1]

b : [-1, 1]

Range

Scale - Reference

Scale - 1

XYZ

[0, 1]

[0, 1]

References

[KSNN21]

Examples

>>> ProLab = np.array([59.8466286, 115.0396354, 20.12510352])
>>> ProLab_to_XYZ(ProLab)  
array([ 0.5163401...,  0.154695 ...,  0.0628957...])