IEVref:845-03-54ID:
Language:enStatus: Obsolete
Term: CIE 1976 <i>L</i>* <i>u</i>* <i>v</i>* colour space
Synonym1: CIELUV colour space
[Preferred]
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Definition: three-dimensional, approximately uniform colour space produced by plotting in rectangular coordinates L* u* v* quantities defined by the equations

{ L =116 ( Y/ Y n ) 1/3 16 Y/ Y n >0,008856 u =13 L ( u u n ) v =13 L ( v v n ) MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=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@787A@

Y, u′, v′ describe the colour stimulus considered and Yn, u′n, v′n describe a specified white achromatic stimulus

NOTE – Approximate correlates of lightness, saturation, chroma, and hue may be calculated as follows:

CIE 1976 lightness: L* = 116 (Y/Yn)1/3 − 16 where Y/Yn > 0,008 856

CIE 1976 u, v saturation: suv = 13 [(u′u′n)2 + (v′v′n)2]1/2

CIE 1976 u, v chroma: C*u, v = (u*2 + v*2)1/2 = L*suv

CIE 1976 u, v hue-angle: hu, v = arctan [(v′v′n)/(u′u′n)] = arctan (v*/u*)


Publication date:1987
SourceCIE Publication No. 15.2
Replaces:
Internal notes:2017-06-02: Cleanup - Remove Attached Image 845-03-54.gif
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