colour.models.oetf_BT2100_PQ¶

colour.models.oetf_BT2100_PQ(E)[source]¶

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

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

Parameters:	E (numeric or array_like) – \(E = {R_S, G_S, B_S; Y_S; or I_S}\) 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:	numeric or ndarray

Notes

Domain	Scale - Reference	Scale - 1
`E`	[0, 1]	[0, 1]

Range	Scale - Reference	Scale - 1
`E_p`	[0, 1]	[0, 1]

References

Examples

>>> oetf_BT2100_PQ(0.1)  # doctest: +ELLIPSIS
0.7247698...