colour.models.log_decoding_ERIMMRGB#

colour.models.log_decoding_ERIMMRGB(X_p: ArrayLike, bit_depth: int = 8, in_int: bool = False, E_min: float = 0.001, E_clip: float = 316.2) → NDArrayFloat[source]#

Define the ERIMM RGB log decoding curve / electro-optical transfer function (EOTF).

Parameters:

  • X_p (ArrayLike) – Non-linear data \(X'_{ERIMM}\).

  • bit_depth (int) – Bit-depth used for conversion.

  • in_int (bool) – Whether to treat the input value as int code value or float equivalent of a code value at a given bit-depth.

  • E_min (float) – Minimum exposure limit.

  • E_clip (float) – Maximum exposure limit.

Returns:

Linear data \(X_{ERIMM}\).

Return type:

numpy.ndarray

Notes

Domain *

Scale - Reference

Scale - 1

X_p

[0, 1]

[0, 1]

Range *

Scale - Reference

Scale - 1

X

[0, 1]

[0, 1]

* This definition has an input int switch, thus the domain-range scale information is only given for the floating point mode.

References

[SWG00]

Examples

>>> log_decoding_ERIMMRGB(0.410052389492129)  
0.1...
>>> log_decoding_ERIMMRGB(105, in_int=True)  
0.1...