colour.models.log_decoding_REDLogFilm

colour.models.log_decoding_REDLogFilm(y: ArrayLike, black_offset: ArrayLike = 10**95 - 685 / 300) → NDArrayFloat

Define the REDLogFilm log decoding curve / electro-optical transfer function.

Parameters:

• y (ArrayLike) – Non-linear data \(y\).

• black_offset (ArrayLike) – Black offset.

Returns:

Linear data \(x\).

Return type:

numpy.ndarray

Notes

Domain	Scale - Reference	Scale - 1
y	[0, 1]	[0, 1]

Range	Scale - Reference	Scale - 1
x	[0, 1]	[0, 1]

References

[SonyImageworks12]

Examples

>>> log_decoding_REDLogFilm(0.457319613085418)  
0.1799999...