colour.models.log_decoding_ACESproxy¶
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colour.models.
log_decoding_ACESproxy
(ACESproxy, bit_depth=10, in_int=False, constants={10: {'CV_max': 940, 'CV_min': 64, 'mid_CV_offset': 425, 'mid_log_offset': 2.5, 'steps_per_stop': 50}, 12: {'CV_max': 3760, 'CV_min': 256, 'mid_CV_offset': 1700, 'mid_log_offset': 2.5, 'steps_per_stop': 200}})[source]¶ Defines the ACESproxy colourspace log decoding curve / electro-optical transfer function.
Parameters: - ACESproxy (numeric or array_like) – ACESproxy non-linear value.
- bit_depth (int, optional) – {10, 12}, ACESproxy bit depth.
- in_int (bool, optional) – Whether to treat the input value as integer code value or float equivalent of a code value at a given bit depth.
- constants (Structure, optional) – ACESproxy constants.
Returns: lin_AP1 value.
Return type: numeric or ndarray
Notes
Domain * Scale - Reference Scale - 1 ACESproxy
[0, 1] [0, 1] Range * Scale - Reference Scale - 1 lin_AP1
[0, 1] [0, 1] - * This definition has an input integer switch, thus the domain-range scale information is only given for the floating point mode.
References
[TheAoMPAaSciencesScienceaTCouncilAcademyCESACESPSubcommittee14c], [TheAoMPAaSciencesScienceaTCouncilAcademyCESACESPSubcommittee14d], [TheAoMPAaSciencesScienceaTCouncilAcademyCESACESPSubcommittee14a], [TheAoMPAaSciencesScienceaTCouncilAcademyCESACESPSubcommittee]
Examples
>>> log_decoding_ACESproxy(0.416422287390029) # doctest: +ELLIPSIS 0.1... >>> log_decoding_ACESproxy(426, in_int=True) # doctest: +ELLIPSIS 0.1...