colour.models.eotf_inverse_DICOMGSDF#

colour.models.eotf_inverse_DICOMGSDF(L: ArrayLike, out_int: bool = False, constants: Structure = CONSTANTS_DICOMGSDF) → NDArrayReal[source]#

Define the DICOM - Grayscale Standard Display Function inverse electro-optical transfer function (EOTF).

Parameters:

L (ArrayLike) – Luminance \(L\).
out_int (bool) – Whether to return value as int code value or float equivalent of a code value at a given bit-depth.
constants (Structure) – DICOM - Grayscale Standard Display Function constants.

Returns:

Just-Noticeable Difference (JND) Index, \(j\).

Return type:

numpy.ndarray

Notes

Domain	Scale - Reference	Scale - 1
`L`	[0, 1]	[0, 1]

Range	Scale - Reference	Scale - 1
`J`	[0, 1]	[0, 1]

References

[NationalEMAssociation04]

Examples

>>> eotf_inverse_DICOMGSDF(130.0662)  
0.5004862...
>>> eotf_inverse_DICOMGSDF(130.0662, out_int=True)
512