colour.XYZ_to_xyY#
- colour.XYZ_to_xyY(XYZ: ArrayLike, illuminant: ArrayLike = CCS_ILLUMINANTS['CIE 1931 2 Degree Standard Observer']['D65']) NDArrayFloat [source]#
Convert from CIE XYZ tristimulus values to CIE xyY colourspace and reference illuminant.
- Parameters:
XYZ (ArrayLike) – CIE XYZ tristimulus values.
illuminant (ArrayLike) – Reference illuminant chromaticity coordinates.
- Returns:
CIE xyY colourspace array.
- Return type:
Notes
Domain
Scale - Reference
Scale - 1
XYZ
[0, 1]
[0, 1]
Range
Scale - Reference
Scale - 1
xyY
[0, 1]
[0, 1]
References
[Lin03b], [Wikipedia05d]
Examples
>>> XYZ = np.array([0.20654008, 0.12197225, 0.05136952]) >>> XYZ_to_xyY(XYZ) array([ 0.5436955..., 0.3210794..., 0.1219722...])