colour.models.rgb.transfer_functions.viper_log Module

Viper Log Encodings

Defines the Viper Log encoding:

• log_encoding_ViperLog()
• log_decoding_ViperLog()

See also

RGB Colourspaces Jupyter Notebook

References

[1]	Sony Imageworks. (2012). make.py. Retrieved November 27, 2014, from https://github.com/imageworks/OpenColorIO-Configs/blob/master/nuke-default/make.py

colour.models.rgb.transfer_functions.viper_log.log_encoding_ViperLog(x)

Defines the Viper Log log encoding curve / opto-electronic transfer function.

Parameters:x (numeric or array_like) – Linear data \(x\). Returns:Non-linear data \(y\). Return type:numeric or ndarray

Examples

>>> log_encoding_ViperLog(0.18)  
0.6360080...

colour.models.rgb.transfer_functions.viper_log.log_decoding_ViperLog(y)

Defines the Viper Log log decoding curve / electro-optical transfer function.

Parameters:y (numeric or array_like) – Non-linear data \(y\). Returns:Linear data \(x\). Return type:numeric or ndarray

Examples

>>> log_decoding_ViperLog(0.636008067010413)  
0.1799999...