colour.models.oetf_BT2100_PQ#

colour.models.oetf_BT2100_PQ(E: ArrayLike) NDArrayFloat[source]#

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

The OETF maps relative scene linear light into the non-linear PQ signal value.

Parameters:

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

Returns:

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

Return type:

numpy.ndarray

Notes

Domain

Scale - Reference

Scale - 1

E

UN

UN

Range

Scale - Reference

Scale - 1

E_p

UN

UN

References

[Bor17], [InternationalTUnion17]

Examples

>>> oetf_BT2100_PQ(0.1)  
0.7247698...