IEVref:845-03-57ID:
Language:enStatus: Obsolete
Term: CIE 1976 <i>L</i>* <i>a</i>* <i>b</i>* colour difference
Synonym1: CIELAB colour difference
[Preferred]
Synonym2:
Synonym3:
Symbol: ΔE*ab
Definition: the difference between two colour stimuli defined as the Euclidean distance between the points representing them in the L* a* b* space and calculated as equation

Δ E ab ∗ = [ ( Δ L ∗ ) 2 + ( Δ a ∗ ) 2 + ( Δ b ∗ ) 2 ] 1/2 MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaaGWaaiab=r5aejaadweadaqhaaWcbaGaamyyaiaadkgaaeaacqGHxiIkaaGccqGH9aqpdaWadaqaamaabmaabaGae8hLdqKaamitamaaCaaaleqabaGaey4fIOcaaaGccaGLOaGaayzkaaWaaWbaaSqabeaacaaIYaaaaOGaey4kaSYaaeWaaeaacqWFuoarcaWGHbWaaWbaaSqabeaacqGHxiIkaaaakiaawIcacaGLPaaadaahaaWcbeqaaiaaikdaaaGccqGHRaWkdaqadaqaaiab=r5aejaadkgadaahaaWcbeqaaiabgEHiQaaaaOGaayjkaiaawMcaamaaCaaaleqabaGaaGOmaaaaaOGaay5waiaaw2faamaaCaaaleqabaGaaGymaiaac+cacaaIYaaaaaaa@532F@

NOTE – The CIE 1976 a, b hue-difference may be calculated as follows:

CIE 1976 a, b hue-difference: ΔH*ab = [(ΔE*ab)2 − (ΔL*)2 − (ΔC*ab)2]1/2


Publication date:1987
SourceCIE-Publication No. 15.2
Replaces:
Internal notes:2017-06-02: Cleanup - Remove Attached Image 845-03-57.gif
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