colour.models.oetf_inverse_BT2100_PQ#

colour.models.oetf_inverse_BT2100_PQ(E_p: ArrayLike) NDArrayFloat[source]#

Define Recommendation ITU-R BT.2100 Reference PQ inverse opto-electrical transfer function (OETF).

Parameters:

E_p (ArrayLike) – \(E'\) is the resulting non-linear signal (\(R'\), \(G'\), \(B'\)).

Returns:

\(E = {R_S, G_S, B_S; Y_S; or I_S}\) is the signal determined by scene light and scaled by camera exposure.

Return type:

numpy.ndarray

Notes

Domain

Scale - Reference

Scale - 1

E_p

UN

UN

Range

Scale - Reference

Scale - 1

E

UN

UN

References

[Bor17], [InternationalTUnion17]

Examples

>>> oetf_inverse_BT2100_PQ(0.724769816665726)  
0.0999999...