colour.models.oetf_ARIBSTDB67

colour.models.oetf_ARIBSTDB67(E, r=0.5)

Defines ARIB STD-B67 (Hybrid Log-Gamma) opto-electrical transfer function (OETF / OECF).

Parameters:

• E (numeric or array_like) – Voltage normalized by the reference white level and proportional to the implicit light intensity that would be detected with a reference camera color channel R, G, B.
• r (numeric, optional) – Video level corresponding to reference white level.

Returns:

Resulting non-linear signal \(E'\).

Return type:

numeric or ndarray

References

• [AssociationoRIaBusinesses15]

Examples

>>> oetf_ARIBSTDB67(0.18)  
0.2121320...