colour.Luv_to_uv

colour.Luv_to_uv(Luv, illuminant=array([ 0.3457, 0.3585]))

Returns the \(uv^p\) chromaticity coordinates from given CIE L*u*v* colourspace array.

Parameters:

• Luv (array_like) – CIE L*u*v* colourspace array.
• illuminant (array_like, optional) – Reference illuminant xy chromaticity coordinates or CIE xyY colourspace array.

Returns:

\(uv^p\) chromaticity coordinates.

Return type:

ndarray

Notes

• Input \(L^*\) is in domain [0, 100].
• Input illuminant xy chromaticity coordinates or CIE xyY colourspace array are in domain [0, \(\infty\)].
• Output \(uv^p\) chromaticity coordinates are in range [0, 1].

References

• [CIET14804e]

Examples

>>> Luv = np.array([37.9856291 , -28.80219593,  -1.35800706])
>>> Luv_to_uv(Luv)  
array([ 0.1508531...,  0.4853297...])