colour.models.oetf_reverse_ARIBSTDB67

colour.models.oetf_reverse_ARIBSTDB67(E_p, r=0.5)

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

Parameters:

• E_p (numeric or array_like) – Non-linear signal \(E'\).
• r (numeric, optional) – Video level corresponding to reference white level.

Returns:

Voltage \(E\) 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.

Return type:

numeric or ndarray

References

• [AssociationoRIaBusinesses15]

Examples

>>> oetf_reverse_ARIBSTDB67(0.212132034355964)  
0.1799999...