colour.colorimetry.intermediate_luminance_function_CIE1976¶
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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) ... # doctest: +ELLIPSIS 12.1972253... >>> intermediate_luminance_function_CIE1976(0.504482161449319, 95) ... # doctest: +ELLIPSIS 12.1972253...