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Area Lighting / Colorimetry

IEV ref 845-23-078

en
CIE 1964 uniform colour space
three-dimensional, approximately uniform colour space produced by plotting in rectangular coordinates U*, V*, W*, quantities defined by the equations:
  • W * =25 Y 1/3 17 U * =13 W * (u u n ) V * =13 W * (v v n ) MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqipu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGacaGaaiaabmqaamaabaabaaGcbaqbaeaabmqaaa qaaabaaaaaaaaapeGaam4vamaaCaaaleqabaGaaiOkaaaakiabg2da 9iaaikdacaaI1aGaamywamaaCaaaleqabaGaaGymaiaac+cacaaIZa aaaOGaeyOeI0IaaGymaiaaiEdaa8aabaWdbiaadwfapaWaaWbaaSqa beaapeGaaiOkaaaakiabg2da9iaaigdacaaIZaGaam4vamaaCaaale qabaGaaiOkaaaak8aacaGGOaWdbiaadwhacqGHsislcaWG1bWdamaa BaaaleaapeGaaeOBaaWdaeqaaOGaaiykaaqaa8qacaWGwbWdamaaCa aaleqabaWdbiaacQcaaaGccqGH9aqpcaaIXaGaaG4maiaadEfadaah aaWcbeqaaiaacQcaaaGcpaGaaiika8qacaWG2bGaeyOeI0IaamODa8 aadaWgaaWcbaWdbiaab6gaa8aabeaakiaacMcaaaaaaa@57B7@

Note 1 to entry: Y, u, v describe the colour stimulus considered, and un, vn describe a specified white achromatic stimulus, where u= u MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqipu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGacaGaaiaabmqaamaabaabaaGcbaGaamyDaiabg2 da9iqadwhagaqbaaaa@38DD@ , v= 2 3 v MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgaruWqVvNCPvMCG4uz 3bqee0evGueE0jxyaibaieYdi9WrpeeC0lXdh9vqqj=hEeea0xXdbb a9frFj0=OqFfea0dXdd9vqaq=JfrVkFHe9pgea0dXdar=Jb9hs0dXd bPYxe9vr0=vr0=vqpWqaaeaaciWacmGadaGadeaaeaGaauaaaOqaai aadAhacqGH9aqpdaWcbaqcbaAaaGqaaiaa=jdaaeaacaWFZaaaaOGa bmODayaafaaaaa@3C57@ ; u n = u n ' MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgaruWqVvNCPvMCG4uz 3bqee0evGueE0jxyaibaieYdi9WrpeeC0lXdh9vqqj=hEeea0xXdbb a9frFj0=OqFfea0dXdd9vqaq=JfrVkFHe9pgea0dXdar=Jb9hs0dXd bPYxe9vr0=vr0=vqpWqaaeaaciWacmGadaGadeaaeaGaauaaaOqaai aadwhadaqhaaWcbaGaaeOBaaqaaaaakiabg2da9iaadwhadaqhaaWc baGaaeOBaaqcbaCaaGGadiaa=Dcaaaaaaa@3DD8@ , v n = 2 3 v n ' MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgaruWqVvNCPvMCG4uz 3bqee0evGueE0jxyaibaieYdi9WrpeeC0lXdh9vqqj=hEeea0xXdbb a9frFj0=OqFfea0dXdd9vqaq=JfrVkFHe9pgea0dXdar=Jb9hs0dXd bPYxe9vr0=vr0=vqpWqaaeaaciWacmGadaGadeaaeaGaauaaaOqaai aadAhadaWgaaWcbaGaaeOBaaqabaGccqGH9aqpdaWcbaqcbaAaaGqa aiaa=jdaaeaacaWFZaaaaOGaamODamaaDaaaleaacaqGUbaajeaWba accmGaa43jaaaaaaa@400D@ .

See also "CIE 1976 uniform-chromaticity-scale diagram".

Note 2 to entry: The difference between two stimuli, ΔE*, is defined as the Euclidean distance between the points representing them in U*V*W* space and calculated as:

  • Δ E * = [ ( Δ U * ) 2 + ( Δ V * ) 2 + ( Δ W * ) 2 ] 1/2 .

Note 3 to entry: The CIE 1964 uniform colour space is obsolete (except that it is still used in the calculation of the colour rendering index). The currently recommended object colour spaces are the CIE 1976 L*a*b* colour space and the CIE 1976 L*u*v* colour space.


fr
espace chromatique uniforme CIE 1964, m
espace chromatique à trois dimensions approximativement uniforme, obtenu en portant en coordonnées rectangulaires les grandeurs U*, V*, W*, définies par les équations:
  • W * =25 Y 1/3 17 U * =13 W * (u u n ) V * =13 W * (v v n ) MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqipu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGacaGaaiaabmqaamaabaabaaGcbaqbaeaabmqaaa qaaabaaaaaaaaapeGaam4vamaaCaaaleqabaGaaiOkaaaakiabg2da 9iaaikdacaaI1aGaamywamaaCaaaleqabaGaaGymaiaac+cacaaIZa aaaOGaeyOeI0IaaGymaiaaiEdaa8aabaWdbiaadwfapaWaaWbaaSqa beaapeGaaiOkaaaakiabg2da9iaaigdacaaIZaGaam4vamaaCaaale qabaGaaiOkaaaak8aacaGGOaWdbiaadwhacqGHsislcaWG1bWdamaa BaaaleaapeGaaeOBaaWdaeqaaOGaaiykaaqaa8qacaWGwbWdamaaCa aaleqabaWdbiaacQcaaaGccqGH9aqpcaaIXaGaaG4maiaadEfadaah aaWcbeqaaiaacQcaaaGcpaGaaiika8qacaWG2bGaeyOeI0IaamODa8 aadaWgaaWcbaWdbiaab6gaa8aabeaakiaacMcaaaaaaa@57B7@

Note 1 à l'article: Y, u, v représentent le stimulus de couleur pris en considération, et un, vn représentent un stimulus achromatique spécifié de couleur blanche, où u= u MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqipu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGacaGaaiaabmqaamaabaabaaGcbaGaamyDaiabg2 da9iqadwhagaqbaaaa@38DD@ , v= 2 3 v MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgaruWqVvNCPvMCG4uz 3bqee0evGueE0jxyaibaieYdi9WrpeeC0lXdh9vqqj=hEeea0xXdbb a9frFj0=OqFfea0dXdd9vqaq=JfrVkFHe9pgea0dXdar=Jb9hs0dXd bPYxe9vr0=vr0=vqpWqaaeaaciWacmGadaGadeaaeaGaauaaaOqaai aadAhacqGH9aqpdaWcbaqcbaAaaGqaaiaa=jdaaeaacaWFZaaaaOGa bmODayaafaaaaa@3C57@ ; u n = u n ' MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgaruWqVvNCPvMCG4uz 3bqee0evGueE0jxyaibaieYdi9WrpeeC0lXdh9vqqj=hEeea0xXdbb a9frFj0=OqFfea0dXdd9vqaq=JfrVkFHe9pgea0dXdar=Jb9hs0dXd bPYxe9vr0=vr0=vqpWqaaeaaciWacmGadaGadeaaeaGaauaaaOqaai aadwhadaqhaaWcbaGaaeOBaaqaaaaakiabg2da9iaadwhadaqhaaWc baGaaeOBaaqcbaCaaGGadiaa=Dcaaaaaaa@3DD8@ , v n = 2 3 v n ' MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgaruWqVvNCPvMCG4uz 3bqee0evGueE0jxyaibaieYdi9WrpeeC0lXdh9vqqj=hEeea0xXdbb a9frFj0=OqFfea0dXdd9vqaq=JfrVkFHe9pgea0dXdar=Jb9hs0dXd bPYxe9vr0=vr0=vqpWqaaeaaciWacmGadaGadeaaeaGaauaaaOqaai aadAhadaWgaaWcbaGaaeOBaaqabaGccqGH9aqpdaWcbaqcbaAaaGqa aiaa=jdaaeaacaWFZaaaaOGaamODamaaDaaaleaacaqGUbaajeaWba accmGaa43jaaaaaaa@400D@ .

Voir aussi "diagramme de chromaticité uniforme CIE 1976".

Note 2 à l'article: La différence entre deux stimuli, ΔE*, est définie par la distance euclidienne entre leurs points représentatifs dans l'espace U*V*W* et calculée par l'équation:

  • Δ E * = [ ( Δ U * ) 2 + ( Δ V * ) 2 + ( Δ W * ) 2 ] 1/2 .

Note 3 tà l'article: L'espace chromatique uniforme CIE 1964 est obsolète (il est cependant toujours utilisé dans le calcul de l'indice de rendu des couleurs). Les espaces chromatiques objets actuellement recommandés sont l'espace chromatique L*a*b* CIE 1976 et l'espace chromatique L*u*v* CIE 1976.


ar
فضاءألوان منتظم طبقا للمواصفة القياسية للإنارة الدوليةCIE (1976)

de
empfindungsgemäß gleichabständiger Farbraum CIE 1964, m

it
spazio del colore uniforme CIE 1964

ko
CIE 1964 균등 색공간

ja
CIE1964均等色空間

pl
przestrzeń barw CIE 1964 równomierna, f

pt
espaço cromático uniforme CIE 1964

zh
CIE 1964均匀色空间

Publication date: 2020-12
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