colour.Lab_to_DIN99¶
-
colour.
Lab_to_DIN99
(Lab, k_E=1, k_CH=1)[source]¶ Converts from CIE L*a*b* colourspace to DIN99 colourspace.
Parameters: - Lab (array_like) – CIE L*a*b* 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: DIN99 colourspace array.
Return type: ndarray
Notes
Domain Scale - Reference Scale - 1 Lab
L
: [0, 100]a
: [-100, 100]b
: [-100, 100]L
: [0, 1]a
: [-1, 1]b
: [-1, 1]Range 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]References
Examples
>>> import numpy as np >>> Lab = np.array([41.52787529, 52.63858304, 26.92317922]) >>> Lab_to_DIN99(Lab) # doctest: +ELLIPSIS array([ 53.2282198..., 28.4163465..., 3.8983955...])