colour.ICTCP_to_RGB

colour.ICTCP_to_RGB(ICTCP, L_p=10000)

Converts from \(IC_TC_P\) colour encoding to ITU-R BT.2020 colourspace.

Parameters

• ICTCP (array_like) – \(IC_TC_P\) colour encoding array.

• L_p (numeric, optional) – Display peak luminance \(cd/m^2\) for SMPTE ST 2084:2014 non-linear encoding. This parameter should stay at its default \(10000 cd/m^2\) value for practical applications. It is exposed so that the definition can be used as a fitting function.

Returns

ITU-R BT.2020 colourspace array.

Return type

ndarray

Warning

The underlying SMPTE ST 2084:2014 transfer function is an absolute transfer function.

Notes

• The underlying SMPTE ST 2084:2014 transfer function is an absolute transfer function, thus the domain and range values for the Reference and 1 scales are only indicative that the data is not affected by scale transformations.

Domain	Scale - Reference	Scale - 1
ICTCP	I : [0, 1] CT : [-1, 1] CP : [-1, 1]	I : [0, 1] CT : [-1, 1] CP : [-1, 1]

Range	Scale - Reference	Scale - 1
RGB	UN	UN

References

[], []

Examples

>>> ICTCP = np.array([0.07351364, 0.00475253, 0.09351596])
>>> ICTCP_to_RGB(ICTCP)  
array([ 0.4562052...,  0.0308107...,  0.0409195...])