colour.cctf_decoding¶
-
colour.
cctf_decoding
(value, function='sRGB', **kwargs)[source]¶ Decodes non-linear \(R'G'B'\) values to linear \(RGB\) values using given decoding colour component transfer function (Decoding CCTF).
- Parameters
value (numeric or array_like) – Non-linear \(R'G'B'\) values.
function (unicode, optional) – {
colour.CCTF_DECODINGS
}, Computation function.
- Other Parameters
**kwargs (dict, optional) – Keywords arguments for the relevant decoding CCTF of the
colour.CCTF_DECODINGS
attribute collection.
Warning
For ITU-R BT.2100, only the electro-optical transfer functions (EOTFs / EOCFs) are exposed by this definition, please refer to the
colour.oetf_inverse()
definition for the inverse opto-electronic transfer functions (OETF / OECF).- Returns
Linear \(RGB\) values.
- Return type
numeric or ndarray
Examples
>>> cctf_decoding(0.391006842619746, function='PLog', log_reference=400) ... 0.1... >>> cctf_decoding(0.182011532850008, function='ST 2084', L_p=1000) ... 0.1... >>> cctf_decoding( ... 0.461356129500442, function='ITU-R BT.1886') 0.1...