colour.models.log_encoding_ERIMMRGB¶
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colour.models.
log_encoding_ERIMMRGB
(X, bit_depth=8, out_int=False, E_min=0.001, E_clip=316.2)[source]¶ Defines the ERIMM RGB log encoding curve / opto-electronic transfer function (OETF / OECF).
Parameters: - X (numeric or array_like) – Linear data \(X_{ERIMM}\).
- bit_depth (int, optional) – Bit depth used for conversion.
- out_int (bool, optional) – Whether to return value as integer code value or float equivalent of a code value at a given bit depth.
- E_min (numeric, optional) – Minimum exposure limit.
- E_clip (numeric, optional) – Maximum exposure limit.
Returns: Non-linear data \(X'_{ERIMM}\).
Return type: numeric or ndarray
Notes
Domain * Scale - Reference Scale - 1 X
[0, 1] [0, 1] Range * Scale - Reference Scale - 1 X_p
[0, 1] [0, 1] - * This definition has an output integer switch, thus the domain-range scale information is only given for the floating point mode.
References
Examples
>>> log_encoding_ERIMMRGB(0.18) # doctest: +ELLIPSIS 0.4100523... >>> log_encoding_ERIMMRGB(0.18, out_int=True) 105