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Area Lighting / Colorimetry

IEV ref845-03-54

en
CIE 1976 L* u* v* colour space
CIELUV colour space
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*)


[SOURCE: CIE Publication No. 15.2]


fr
espace chromatique L* u* v* CIE 1976, m
espace chromatique CIELUV, m
espace chromatique à trois dimensions approximativement uniforme, obtenu en portant en coordonnées rectangulaires les grandeurs L* u* v* définies par les équations

{ 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′ représentent le stimulus de couleur considéré et Yn, un, vn un stimulus achromatique spécifié de couleur blanche

Note – Les correspondants approximatifs de clarté, saturation, chroma et teinte peuvent être calculés comme suit:

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

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

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

angle de teinte u, v CIE 1976: hu, v = arctan [(v′ − vn)/(u′ − un)] = arctan (v*/u*)


[SOURCE: Publication CIE N° 15.2]


ar
المواصفة القياسية للأبعاد الثلاثية للألوان في الفراغ للجنة الإنارة الدولية

de
L* u* v* Farbenraum CIE 1976, m
CIELUV-Farbenraum, m

es
espacio de color CIELUV

fi
CIE:n vuoden 1976 Luv-väriavaruus
CIELUV-väriavaruus

it
spazio colorimetrico L u v

ko
시아이이 1976 L* u* v* 색공간
시아이이엘유브이 색공간

ja
CIE 1976 L* u* v*色空間

no
nb CIE 1976 L* u* v* fargerom, CIELUV-fargerom

nn CIE 1976 L* u* v* fargerom, CIELUV-fargerom

pl
przestrzeń barw CIE 1976 (L*, u*, v*)
przestrzeń barw CIELUV

pt
espaço cromático L*u*v* CIE 1977
espaço cromático CIELUV

sv
CIELUV-rymd

Publication date: 1987
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