colour.models.oetf_BT2100_HLG¶
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colour.models.
oetf_BT2100_HLG
(E)[source]¶ Defines Recommendation ITU-R BT.2100 Reference HLG opto-electrical transfer function (OETF / OECF).
The OETF maps relative scene linear light into the non-linear HLG signal value.
Parameters: E (numeric or array_like) – \(E\) is the signal for each colour component \({R_S, G_S, B_S}\) proportional to scene linear 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], [InternationalTUnion16]
Examples
>>> oetf_BT2100_HLG(0.18 / 12) # doctest: +ELLIPSIS 0.2121320...