colour.models.oetf_inverse_ARIBSTDB67#
- colour.models.oetf_inverse_ARIBSTDB67(E_p: FloatingOrArrayLike, r: FloatingOrArrayLike = 0.5, constants: Structure = CONSTANTS_ARIBSTDB67) FloatingOrNDArray [source]#
Define ARIB STD-B67 (Hybrid Log-Gamma) inverse opto-electrical transfer function (OETF).
- Parameters:
E_p (FloatingOrArrayLike) – Non-linear signal \(E'\).
r (FloatingOrArrayLike) – Video level corresponding to reference white level.
constants (Structure) – ARIB STD-B67 (Hybrid Log-Gamma) constants.
- Returns:
Voltage \(E\) normalised 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:
Notes
Domain
Scale - Reference
Scale - 1
E_p
[0, 1]
[0, 1]
Range
Scale - Reference
Scale - 1
E
[0, 1]
[0, 1]
This definition uses the mirror negative number handling mode of
colour.models.gamma_function()
definition to the sign of negative numbers.
References
Examples
>>> oetf_inverse_ARIBSTDB67(0.212132034355964) 0.1799999...