colour.IPT_to_XYZ

colour.IPT_to_XYZ(IPT: 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 IPT colourspace to CIE XYZ tristimulus values.

Parameters:

IPT (Annotated[_Buffer | _SupportsArray[dtype[Any]] | _NestedSequence[_SupportsArray[dtype[Any]]] | complex | bytes | str | _NestedSequence[complex | bytes | str], 1]) – IPT colourspace array.

Returns:

CIE XYZ tristimulus values.

Return type:

numpy.ndarray

Notes

Domain	Scale - Reference	Scale - 1
IPT	1	1

Range	Scale - Reference	Scale - 1
XYZ	1	1

• Output CIE XYZ tristimulus values are adapted to CIE Standard Illuminant D Series D65.

References

[Fai13g]

Examples

>>> IPT = np.array([0.38426191, 0.38487306, 0.18886838])
>>> IPT_to_XYZ(IPT)
array([ 0.2065400...,  0.1219722...,  0.0513695...])