colour.models.eotf_inverse_DCDM#

colour.models.eotf_inverse_DCDM(XYZ: ArrayLike, out_int: bool = False) → NDArrayReal[source]#

Apply the DCDM inverse electro-optical transfer function (EOTF).

Parameters:

XYZ (ArrayLike) – CIE XYZ tristimulus values.
out_int (bool) – Whether to return value as integer code value or float equivalent of a code value at a specified bit-depth.

Returns:

Non-linear CIE XYZ’ tristimulus values.

Return type:

numpy.ndarray

Warning

DCDM is an absolute transfer function.

Notes

DCDM 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
`XYZ`	`UN`	`UN`

Range *	Scale - Reference	Scale - 1
`XYZ_p`	`UN`	`UN`

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

References

Examples

>>> eotf_inverse_DCDM(0.18)
0.1128186...
>>> eotf_inverse_DCDM(0.18, out_int=True)
462