colour.models.oetf_inverse_PQ_BT2100

colour.models.oetf_inverse_PQ_BT2100(E_p)[source]

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

Parameters:E_p (numeric or array_like) – \(E'\) 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:numeric or ndarray

Notes

Domain Scale - Reference Scale - 1
E_p [0, 1] [0, 1]
Range Scale - Reference Scale - 1
E [0, 1] [0, 1]

References

[Borer2017a], [InternationalTelecommunicationUnion2017]

Examples

>>> oetf_inverse_PQ_BT2100(0.724769816665726)  # doctest: +ELLIPSIS
0.0999999...