colour.sUCS_to_XYZ

colour.sUCS_to_XYZ(Iab: Annotated[_Buffer | _SupportsArray[dtype[Any]] | _NestedSequence[_SupportsArray[dtype[Any]]] | complex | bytes | str | _NestedSequence[complex | bytes | str], 100]) → Annotated[ndarray[tuple[Any, ...], dtype[float16 | float32 | float64]], 1]

Convert from sUCS colourspace to CIE XYZ tristimulus values.

Parameters:

Iab (Annotated[_Buffer | _SupportsArray[dtype[Any]] | _NestedSequence[_SupportsArray[dtype[Any]]] | complex | bytes | str | _NestedSequence[complex | bytes | str], 100]) – sUCS \(Iab\) colourspace array.

Returns:

CIE XYZ tristimulus values, adapted to CIE Standard Illuminant D65 and in domain [0, 1] (where white \(Y\) is 1.0).

Return type:

numpy.ndarray

Notes

Domain	Scale - Reference	Scale - 1
Iab	100	1

Range	Scale - Reference	Scale - 1
XYZ	1	1

References

[LL24]

Examples

>>> Iab = np.array([42.62923653, 36.97646831, 14.12301358])
>>> sUCS_to_XYZ(Iab)
array([ 0.2065400...,  0.1219722...,  0.0513695...])