colour.eotf_inverse#

colour.eotf_inverse(value: Union[float, _SupportsArray[dtype], _NestedSequence[_SupportsArray[dtype]], bool, int, complex, str, bytes, _NestedSequence[Union[bool, int, float, complex, str, bytes]]], function: Union[Literal['DCDM', 'DICOM GSDF', 'ITU-R BT.1886', 'ITU-R BT.2100 HLG', 'ITU-R BT.2100 PQ', 'ITU-T H.273 ST.428-1', 'ST 2084', 'sRGB'], str] = 'ITU-R BT.1886', **kwargs) Union[float, ndarray, int][source]#

Encode estimated tristimulus values in a scene to \(R'G'B'\) video component signal value using given inverse electro-optical transfer function (EOTF).

Parameters:
Returns:

\(R'G'B'\) video component signal value.

Return type:

numpy.floating or numpy.integer or numpy.ndarray

Examples

>>> eotf_inverse(0.11699185725296059)  
0.4090077...
>>> eotf_inverse(  
...     0.11699185725296059, function="ITU-R BT.1886"
... )
0.4090077...