colour.models.eotf_inverse_DCDM#

colour.models.eotf_inverse_DCDM(XYZ: FloatingOrArrayLike, out_int: Boolean = False) Union[FloatingOrNDArray, IntegerOrNDArray][source]#

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

Parameters
  • XYZ (FloatingOrArrayLike) – CIE XYZ tristimulus values.

  • out_int (Boolean) – Whether to return value as integer code value or float equivalent of a code value at a given bit depth.

Returns

Non-linear CIE XYZ’ tristimulus values.

Return type

numpy.floating or numpy.integer or 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 integer switch, thus the domain-range scale information is only given for the floating point mode.

References

[DigitalCInitiatives07]

Examples

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