colour.UVW_to_XYZ

colour.UVW_to_XYZ(UVW: Annotated[_Buffer | _SupportsArray[dtype[Any]] | _NestedSequence[_SupportsArray[dtype[Any]]] | complex | bytes | str | _NestedSequence[complex | bytes | str], 100], illuminant: ArrayLike = CCS_ILLUMINANTS['CIE 1931 2 Degree Standard Observer']['D65']) → Annotated[ndarray[tuple[Any, ...], dtype[float16 | float32 | float64]], 100]

Convert from CIE 1964 U*V*W* colourspace to CIE XYZ tristimulus values.

Parameters:

• UVW (Annotated[_Buffer | _SupportsArray[dtype[Any]] | _NestedSequence[_SupportsArray[dtype[Any]]] | complex | bytes | str | _NestedSequence[complex | bytes | str], 100]) – CIE 1964 U*V*W* 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
UVW	100	1
illuminant	1	1

Range	Scale - Reference	Scale - 1
XYZ	100	1

References

[Wikipedia08d]

Examples

>>> import numpy as np
>>> UVW = np.array([94.55035725, 11.55536523, 40.54757405])
>>> UVW_to_XYZ(UVW)
array([ 20.654008,  12.197225,   5.136952])