colour.models.oetf_reverse_BT2100_PQ¶
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colour.models.
oetf_reverse_BT2100_PQ
(E_p)[source]¶ Defines Recommendation ITU-R BT.2100 Reference PQ reverse 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
[Bor17], [InternationalTUnion16]
Examples
>>> oetf_reverse_BT2100_PQ(0.724769816665726) # doctest: +ELLIPSIS 0.0999999...