colour.DIN99_to_Lab¶
-
colour.
DIN99_to_Lab
(Lab_99, k_E=1, k_CH=1)[source]¶ Converts from DIN99 colourspace to CIE L*a*b* colourspace.
Parameters: - Lab_99 (array_like) – DIN99 colourspace array.
- k_E (numeric, optional) – Parametric factor \(K_E\) used to compensate for texture and other specimen presentation effects.
- k_CH (numeric, optional) – Parametric factor \(K_{CH}\) used to compensate for texture and other specimen presentation effects.
Returns: CIE L*a*b* colourspace array.
Return type: ndarray
Notes
Domain Scale - Reference Scale - 1 Lab_99
L_99
: [0, 100]a_99
: [-100, 100]b_99
: [-100, 100]L_99
: [0, 1]a_99
: [-1, 1]b_99
: [-1, 1]Range Scale - Reference Scale - 1 Lab
L
: [0, 100]a
: [-100, 100]b
: [-100, 100]L
: [0, 1]a
: [-1, 1]b
: [-1, 1]References
Examples
>>> import numpy as np >>> Lab_99 = np.array([53.22821988, 28.41634656, 3.89839552]) >>> DIN99_to_Lab(Lab_99) # doctest: +ELLIPSIS array([ 41.5278752..., 52.6385830..., 26.9231792...])