colour.quality.colour_fidelity_index_ANSIIESTM3018

colour.quality.colour_fidelity_index_ANSIIESTM3018(sd_test: colour.colorimetry.spectrum.SpectralDistribution, additional_data: bool = False) → float | colour.quality.tm3018.ColourQuality_Specification_ANSIIESTM3018 | colour.quality.cfi2017.ColourRendering_Specification_CIE2017

Return the ANSI/IES TM-30-18 Colour Fidelity Index (CFI) \(R_f\) of given spectral distribution.

Parameters

• sd_test (colour.colorimetry.spectrum.SpectralDistribution) – Test spectral distribution.

• additional_data (bool) – Whether to output additional data.

Returns

ANSI/IES TM-30-18 Colour Fidelity Index (CFI).

Return type

float or colour.quality.ColourQuality_Specification_ANSIIESTM3018

References

[ANSIIESCCommittee18], [VincentJ17]

Examples

>>> from colour import SDS_ILLUMINANTS
>>> sd = SDS_ILLUMINANTS["FL2"]
>>> colour_fidelity_index_ANSIIESTM3018(sd)  
70.1208244...