colour.models.log_decoding_Log2#
- colour.models.log_decoding_Log2(log_norm: ArrayLike, middle_grey: float = 0.18, min_exposure: float = - 6.5, max_exposure: float = 6.5) NDArrayFloat [source]#
Define the common Log2 decoding function.
- Parameters
- Returns
Linear Log2 decoded data.
- Return type
Notes
The common Log2 decoding function can be used to build logarithmic to linear shapers in the ACES OCIO configuration.
The shaper with logarithmic encoded values can be decoded back to linear domain:
Shaper Range
Shaper Domain
[0, 1]
[0.002, 16.291]
References
[TheAoMPAaSciencesScienceaTCouncilAcademyCESACESPSubcommitteec]
Examples
>>> log_decoding_Log2(0.5) 0.1799999...