colour.log_decoding#

colour.log_decoding(value: ArrayLike, function: LiteralLogDecoding | str = 'Cineon', **kwargs: Any) NDArrayFloat[source]#

Decode \(R'G'B'\) video component signal value to scene-referred exposure values using given log decoding function.

Parameters:
Returns:

Scene-referred exposure values.

Return type:

numpy.ndarray

Examples

>>> log_decoding(0.457319613085418)  
0.1...
>>> log_decoding(0.413588402492442, function="ACEScc")
... 
0.1...
>>> log_decoding(0.391006842619746, function="PLog", log_reference=400)
... 
0.1...
>>> log_decoding(0.376512722254600, function="S-Log")
... 
0.1...