colour.models.eotf_inverse_ST2084¶
- colour.models.eotf_inverse_ST2084(C, L_p=10000, constants={'c_1': 0.8359375, 'c_2': 18.8515625, 'c_3': 18.6875, 'm_1': 0.1593017578125, 'm_2': 78.84375})[source]¶
Defines SMPTE ST 2084:2014 optimised perceptual inverse electro-optical transfer function (EOTF / EOCF).
- Parameters
C (numeric or array_like) – Target optical output \(C\) in \(cd/m^2\) of the ideal reference display.
L_p (numeric, optional) – System peak luminance \(cd/m^2\), 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.
constants (Structure, optional) – SMPTE ST 2084:2014 constants.
- Returns
Color value abbreviated as \(N\), that is directly proportional to the encoded signal representation, and which is not directly proportional to the optical output of a display device.
- Return type
numeric or ndarray
Warning
SMPTE ST 2084:2014 is an absolute transfer function.
Notes
SMPTE ST 2084:2014 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. The effective domain of SMPTE ST 2084:2014 inverse electro-optical transfer function (EOTF / EOCF) is [0.0001, 10000].
Domain
Scale - Reference
Scale - 1
C
UN
UN
Range
Scale - Reference
Scale - 1
N
UN
UN
References
[], []
Examples
>>> eotf_inverse_ST2084(100) 0.5080784...