colour.models.eotf_DCDM#

colour.models.eotf_DCDM(XYZ_p: Union[FloatingOrArrayLike, IntegerOrArrayLike], in_int: bool = False) FloatingOrNDArray[source]#

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

Parameters:
  • XYZ_p (Union[FloatingOrArrayLike, IntegerOrArrayLike]) – Non-linear CIE XYZ’ tristimulus values.

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

Returns:

CIE XYZ tristimulus values.

Return type:

numpy.floating 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_p

UN

UN

Range *

Scale - Reference

Scale - 1

XYZ

UN

UN

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

References

[DigitalCInitiatives07]

Examples

>>> eotf_DCDM(0.11281860951766724)  
0.18...
>>> eotf_DCDM(462, in_int=True)  
0.18...