colour.RGB_to_Prismatic

colour.RGB_to_Prismatic(RGB)[source]

Converts from RGB colourspace to Prismatic \(L\rho\gamma\beta\) colourspace array.

Parameters:RGB (array_like) – RGB colourspace array.
Returns:Prismatic \(L\rho\gamma\beta\) colourspace array.
Return type:ndarray

Notes

Domain Scale - Reference Scale - 1
RGB [0, 1] [0, 1]
Range Scale - Reference Scale - 1
Lrgb [0, 1] [0, 1]

References

[Shirley2015a]

Examples

>>> RGB = np.array([0.25, 0.50, 0.75])
>>> RGB_to_Prismatic(RGB)  # doctest: +ELLIPSIS
array([ 0.75...   ,  0.1666666...,  0.3333333...,  0.5...   ])

Adjusting saturation of given RGB colourspace array: >>> saturation = 0.5 >>> Lrgb = RGB_to_Prismatic(RGB) >>> Lrgb[…, 1:] = 1 / 3 + saturation * (Lrgb[…, 1:] - 1 / 3) >>> Prismatic_to_RGB(Lrgb) # doctest: +ELLIPSIS array([ 0.45…, 0.6…, 0.75…])