colour.difference.delta_E_CIE1976¶
-
colour.difference.
delta_E_CIE1976
(Lab_1, Lab_2)[source]¶ Returns the difference \(\Delta E_{76}\) between two given CIE L*a*b* colourspace arrays using CIE 1976 recommendation.
- Parameters
Lab_1 (array_like) – CIE L*a*b* colourspace array 1.
Lab_2 (array_like) – CIE L*a*b* colourspace array 2.
- Returns
Colour difference \(\Delta E_{76}\).
- Return type
numeric or ndarray
Notes
Domain
Scale - Reference
Scale - 1
Lab_1
L_1
: [0, 100]a_1
: [-100, 100]b_1
: [-100, 100]L_1
: [0, 1]a_1
: [-1, 1]b_1
: [-1, 1]Lab_2
L_2
: [0, 100]a_2
: [-100, 100]b_2
: [-100, 100]L_2
: [0, 1]a_2
: [-1, 1]b_2
: [-1, 1]References
Examples
>>> Lab_1 = np.array([100.00000000, 21.57210357, 272.22819350]) >>> Lab_2 = np.array([100.00000000, 426.67945353, 72.39590835]) >>> delta_E_CIE1976(Lab_1, Lab_2) 451.7133019...