colour.models.oetf_PQ_BT2100¶
-
colour.models.
oetf_PQ_BT2100
(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
[Bor17], [InternationalTUnion17]
Examples
>>> oetf_PQ_BT2100(0.1) 0.7247698...