colour.colorimetry.intermediate_luminance_function_CIE1976¶
-
colour.colorimetry.
intermediate_luminance_function_CIE1976
(f_Y_Y_n, Y_n=100)[source]¶ Returns 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 (numeric or array_like) – Intermediate value \(f(Y/Yn)\).
Y_n (numeric or array_like) – White reference luminance \(Y_n\).
- Returns
luminance \(Y\).
- Return type
numeric or array_like
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
Examples
>>> intermediate_luminance_function_CIE1976(0.495929964178047) ... 12.1972253... >>> intermediate_luminance_function_CIE1976(0.504482161449319, 95) ... 12.1972253...