colour.XYZ_to_CIE1960UCS

colour.XYZ_to_CIE1960UCS(XYZ: Annotated[_Buffer | _SupportsArray[dtype[Any]] | _NestedSequence[_SupportsArray[dtype[Any]]] | complex | bytes | str | _NestedSequence[complex | bytes | str], 1]) → Annotated[ndarray[tuple[Any, ...], dtype[float16 | float32 | float64]], 1]

Convert from CIE XYZ tristimulus values to CIE 1960 UCS \(uvV\) colourspace.

This colourspace combines the CIE 1960 UCS \(UVW\) colourspace \(uv\) chromaticity coordinates with the luminance \(V\) from the CIE 1960 UCS \(UVW\) colourspace.

It is a convenient definition for use with the CIE 1960 UCS Chromaticity Diagram.

Parameters:

XYZ (Annotated[_Buffer | _SupportsArray[dtype[Any]] | _NestedSequence[_SupportsArray[dtype[Any]]] | complex | bytes | str | _NestedSequence[complex | bytes | str], 1]) – CIE XYZ tristimulus values.

Returns:

\(uvV\) colourspace array.

Return type:

numpy.ndarray

Notes

Domain	Scale - Reference	Scale - 1
XYZ	1	1

Range	Scale - Reference	Scale - 1
uvV	1	1

Examples

>>> import numpy as np
>>> XYZ = np.array([0.20654008, 0.12197225, 0.05136952])
>>> XYZ_to_CIE1960UCS(XYZ)
array([ 0.3772021...,  0.3341350...,  0.12197225])