colour.ICaCb_to_XYZ

colour.ICaCb_to_XYZ(ICaCb: 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 \(IC_AC_B\) colourspace to CIE XYZ tristimulus values.

Parameters:

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

Returns:

CIE XYZ tristimulus values.

Return type:

numpy.ndarray

Notes

Domain	Scale - Reference	Scale - 1
ICaCb	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

[Frohlich17]

Examples

>>> ICaCb = np.array([0.06875297, 0.05753352, 0.02081548])
>>> ICaCb_to_XYZ(ICaCb)
array([0.2065400..., 0.1219722..., 0.0513695...])