colour.colorimetry.intermediate_luminance_function_CIE1976¶
- colour.colorimetry.intermediate_luminance_function_CIE1976(f_Y_Y_n: FloatingOrArrayLike, Y_n: FloatingOrArrayLike = 100) FloatingOrNDArray [source]¶
Return the luminance \(Y\) in the luminance \(Y\) computation for given intermediate value \(f(Y/Yn)\) using given reference white luminance \(Y_n\) as per CIE 1976 recommendation.
- Parameters
f_Y_Y_n (FloatingOrArrayLike) – Intermediate value \(f(Y/Yn)\).
Y_n (FloatingOrArrayLike) – White reference luminance \(Y_n\).
- Returns
Luminance \(Y\).
- Return type
Notes
Domain
Scale - Reference
Scale - 1
f_Y_Y_n
[0, 1]
[0, 1]
Range
Scale - Reference
Scale - 1
Y
[0, 100]
[0, 100]
References
[CIET14804f], [WS00c]
Examples
>>> intermediate_luminance_function_CIE1976(0.495929964178047) ... 12.1972253... >>> intermediate_luminance_function_CIE1976(0.504482161449319, 95) ... 12.1972253...