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Area Lighting / Colorimetry

IEV ref 845-23-074

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 =116f( Y/ Y n )16 u =13 L ( u u n ) v =13 L ( v v n ) MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaiqaciWacmGadaGadeaabaGaaqaaaOabaeqabaGaamitamaaCa aaleqabaGaey4fIOcaaOGaeyypa0JaaGymaiaaigdacaaI2aGaamOz amaabmaabaWaaSGbaeaacaWGzbaabaGaamywamaaBaaaleaacaqGUb aabeaaaaaakiaawIcacaGLPaaacqGHsislcaaIXaGaaGOnaaqaaiaa dwhadaahaaWcbeqaaiabgEHiQaaakiabg2da9iaaigdacaaIZaGaam itamaaCaaaleqabaGaey4fIOcaaOWaaeWaaeaaceWG1bGbauaacqGH sislceWG1bGbauaadaWgaaWcbaGaaeOBaaqabaaakiaawIcacaGLPa aaaeaacaWG2bWaaWbaaSqabeaacqGHxiIkaaGccqGH9aqpcaaIXaGa aG4maiaadYeadaahaaWcbeqaaiabgEHiQaaakmaabmaabaGabmODay aafaGaeyOeI0IabmODayaafaWaaSbaaSqaaiaab6gaaeqaaaGccaGL OaGaayzkaaaaaaa@5AE0@

where

  • f( Y/ Y n )= ( Y/ Y n ) 1/3 MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaaiaadAgadaqadaqaam aalyaabaGaamywaaqaaiaadMfadaWgaaWcbaGaaeOBaaqabaaaaaGc caGLOaGaayzkaaGaeyypa0ZaaeWaaeaadaWcgaqaaiaadMfaaeaaca WGzbWaaSbaaSqaaiaab6gaaeqaaaaaaOGaayjkaiaawMcaamaaCaaa leqabaGaaGymaiaac+cacaaIZaaaaaaa@429E@ if ( Y/ Y n )> ( 6/ 29 ) 3 MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaamaabmaabaWaaSGbae aacaWGzbaabaGaamywamaaBaaaleaacaqGUbaabeaaaaaakiaawIca caGLPaaacqGH+aGpdaqadaqaamaalyaabaGaaGOnaaqaaiaaikdaca aI5aaaaaGaayjkaiaawMcaamaaCaaaleqabaGaaG4maaaaaaa@3FA3@
  • f( Y/ Y n )=( 841/ 108 )( Y/ Y n )+4/ 29 MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaaiaadAgadaqadaqaam aalyaabaGaamywaaqaaiaadMfadaWgaaWcbaGaaeOBaaqabaaaaaGc caGLOaGaayzkaaGaeyypa0ZaaeWaaeaadaWcgaqaaiaaiIdacaaI0a GaaGymaaqaaiaaigdacaaIWaGaaGioaaaaaiaawIcacaGLPaaadaqa daqaamaalyaabaGaamywaaqaaiaadMfadaWgaaWcbaGaaeOBaaqaba aaaaGccaGLOaGaayzkaaGaey4kaSYaaSGbaeaacaaI0aaabaGaaGOm aiaaiMdaaaaaaa@498C@ if ( Y/ Y n ) ( 6/ 29 ) 3 MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaamaabmaabaWaaSGbae aacaWGzbaabaGaamywamaaBaaaleaacaqGUbaabeaaaaaakiaawIca caGLPaaacqGHKjYOdaqadaqaamaalyaabaGaaGOnaaqaaiaaikdaca aI5aaaaaGaayjkaiaawMcaamaaCaaaleqabaGaaG4maaaaaaa@4050@

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

Note 1 to entry: Approximate correlates of lightness, saturation, chroma, and hue can be calculated as follows:

CIE 1976 lightness:

  • L =116f( Y/ Y n )16 MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaaiaadYeadaahaaWcbe qaaiabgEHiQaaakiabg2da9iaaigdacaaIXaGaaGOnaiaadAgadaqa daqaamaalyaabaGaamywaaqaaiaadMfadaWgaaWcbaGaaeOBaaqaba aaaaGccaGLOaGaayzkaaGaeyOeI0IaaGymaiaaiAdaaaa@4259@

where

  • f( Y/ Y n )= ( Y/ Y n ) 1/3 MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaaiaadAgadaqadaqaam aalyaabaGaamywaaqaaiaadMfadaWgaaWcbaGaaeOBaaqabaaaaaGc caGLOaGaayzkaaGaeyypa0ZaaeWaaeaadaWcgaqaaiaadMfaaeaaca WGzbWaaSbaaSqaaiaab6gaaeqaaaaaaOGaayjkaiaawMcaamaaCaaa leqabaGaaGymaiaac+cacaaIZaaaaaaa@429E@ if ( Y/ Y n )> ( 6/ 29 ) 3 MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaamaabmaabaWaaSGbae aacaWGzbaabaGaamywamaaBaaaleaacaqGUbaabeaaaaaakiaawIca caGLPaaacqGH+aGpdaqadaqaamaalyaabaGaaGOnaaqaaiaaikdaca aI5aaaaaGaayjkaiaawMcaamaaCaaaleqabaGaaG4maaaaaaa@3FA3@
  • f( Y/ Y n )=( 841/ 108 )( Y/ Y n )+4/ 29 MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaaiaadAgadaqadaqaam aalyaabaGaamywaaqaaiaadMfadaWgaaWcbaGaaeOBaaqabaaaaaGc caGLOaGaayzkaaGaeyypa0ZaaeWaaeaadaWcgaqaaiaaiIdacaaI0a GaaGymaaqaaiaaigdacaaIWaGaaGioaaaaaiaawIcacaGLPaaadaqa daqaamaalyaabaGaamywaaqaaiaadMfadaWgaaWcbaGaaeOBaaqaba aaaaGccaGLOaGaayzkaaGaey4kaSYaaSGbaeaacaaI0aaabaGaaGOm aiaaiMdaaaaaaa@498C@ if ( Y/ Y n ) ( 6/ 29 ) 3 MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaamaabmaabaWaaSGbae aacaWGzbaabaGaamywamaaBaaaleaacaqGUbaabeaaaaaakiaawIca caGLPaaacqGHKjYOdaqadaqaamaalyaabaGaaGOnaaqaaiaaikdaca aI5aaaaaGaayjkaiaawMcaamaaCaaaleqabaGaaG4maaaaaaa@4050@

CIE 1976 u, v saturation:

  • s uv =13 [ ( u u n ) 2 + ( v v n ) 2 ] 1/2 MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqipu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGacaGaciaabmqaamaabaabaaGcbaGaam4CamaaBa aaleaacaqG1bGaaeODaaqabaGccqGH9aqpcaaIXaGaaG4mamaadmaa baWaaeWaaeaaceWG1bGbauaacqGHsislceWG1bGbauaadaWgaaWcba GaamOBaaqabaaakiaawIcacaGLPaaadaahaaWcbeqaaiaaikdaaaGc cqGHRaWkdaqadaqaaiqadAhagaqbaiabgkHiTiqadAhagaqbamaaBa aaleaacaWGUbaabeaaaOGaayjkaiaawMcaamaaCaaaleqabaGaaGOm aaaaaOGaay5waiaaw2faamaaCaaaleqabaGaaGymaiaac+cacaaIYa aaaaaa@4DDE@

CIE 1976 u, v chroma:

  • Δ C uv * = ( u *2 + v *2 ) 1/2 = L * s uv MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqipu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGacaGaaiaabmqaamaabaabaaGcbaGaeuiLdqKaam 4qamaaDaaaleaacaqG1bGaaeODaaqaaiaacQcaaaGccqGH9aqpdaqa daqaaiaadwhadaahaaWcbeqaaiaacQcacaaIYaaaaOGaey4kaSIaam ODamaaCaaaleqabaGaaiOkaiaaikdaaaaakiaawIcacaGLPaaadaah aaWcbeqaaiaaigdacaGGVaGaaGOmaaaakiabg2da9iaadYeadaahaa WcbeqaaiaacQcaaaGccaWGZbWaaSbaaSqaaiaabwhacaqG2baabeaa aaa@4BB4@

CIE 1976 u, v hue angle:

  • h uv =arctan[ ( v v n )/ ( u u n ) 2 ]=arctan( v * / u * ) MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqipu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGacaGaciaabmqaamaabaabaaGcbaGaamiAamaaBa aaleaacaqG1bGaaeODaaqabaGccqGH9aqpcaqGHbGaaeOCaiaaboga caqG0bGaaeyyaiaab6gadaWadaqaamaalyaabaWaaeWaaeaaceWG2b GbauaacqGHsislceWG2bGbauaadaWgaaWcbaGaamOBaaqabaaakiaa wIcacaGLPaaaaeaadaqadaqaaiqadwhagaqbaiabgkHiTiqadwhaga qbamaaBaaaleaacaWGUbaabeaaaOGaayjkaiaawMcaamaaCaaaleqa baGaaGOmaaaaaaaakiaawUfacaGLDbaacqGH9aqpciGGHbGaaiOCai aacogacaGG0bGaaiyyaiaac6gadaqadaqaamaalyaabaGaamODamaa CaaaleqabaGaaiOkaaaaaOqaaiaadwhadaahaaWcbeqaaiaacQcaaa aaaaGccaGLOaGaayzkaaaaaa@59C7@

Note 2 to entry: See also CIE 15, Colorimetry.

Note 3 to entry: See also ISO/CIE 11664-5, Colorimetry – Part 5: CIE 1976 L*u*v* Colour Space and u', v' Uniform Chromaticity Scale Diagram.

Note 4 to entry: This entry was numbered 845-03-54 in IEC 60050-845:1987.


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 =116f( Y/ Y n )16 u =13 L ( u u n ) v =13 L ( v v n ) MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaiqaciWacmGadaGadeaabaGaaqaaaOabaeqabaGaamitamaaCa aaleqabaGaey4fIOcaaOGaeyypa0JaaGymaiaaigdacaaI2aGaamOz amaabmaabaWaaSGbaeaacaWGzbaabaGaamywamaaBaaaleaacaqGUb aabeaaaaaakiaawIcacaGLPaaacqGHsislcaaIXaGaaGOnaaqaaiaa dwhadaahaaWcbeqaaiabgEHiQaaakiabg2da9iaaigdacaaIZaGaam itamaaCaaaleqabaGaey4fIOcaaOWaaeWaaeaaceWG1bGbauaacqGH sislceWG1bGbauaadaWgaaWcbaGaaeOBaaqabaaakiaawIcacaGLPa aaaeaacaWG2bWaaWbaaSqabeaacqGHxiIkaaGccqGH9aqpcaaIXaGa aG4maiaadYeadaahaaWcbeqaaiabgEHiQaaakmaabmaabaGabmODay aafaGaeyOeI0IabmODayaafaWaaSbaaSqaaiaab6gaaeqaaaGccaGL OaGaayzkaaaaaaa@5AE0@

  • f( Y/ Y n )= ( Y/ Y n ) 1/3 MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaaiaadAgadaqadaqaam aalyaabaGaamywaaqaaiaadMfadaWgaaWcbaGaaeOBaaqabaaaaaGc caGLOaGaayzkaaGaeyypa0ZaaeWaaeaadaWcgaqaaiaadMfaaeaaca WGzbWaaSbaaSqaaiaab6gaaeqaaaaaaOGaayjkaiaawMcaamaaCaaa leqabaGaaGymaiaac+cacaaIZaaaaaaa@429E@ si ( Y/ Y n )> ( 6/ 29 ) 3 MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaamaabmaabaWaaSGbae aacaWGzbaabaGaamywamaaBaaaleaacaqGUbaabeaaaaaakiaawIca caGLPaaacqGH+aGpdaqadaqaamaalyaabaGaaGOnaaqaaiaaikdaca aI5aaaaaGaayjkaiaawMcaamaaCaaaleqabaGaaG4maaaaaaa@3FA3@
  • f( Y/ Y n )=( 841/ 108 )( Y/ Y n )+4/ 29 MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaaiaadAgadaqadaqaam aalyaabaGaamywaaqaaiaadMfadaWgaaWcbaGaaeOBaaqabaaaaaGc caGLOaGaayzkaaGaeyypa0ZaaeWaaeaadaWcgaqaaiaaiIdacaaI0a GaaGymaaqaaiaaigdacaaIWaGaaGioaaaaaiaawIcacaGLPaaadaqa daqaamaalyaabaGaamywaaqaaiaadMfadaWgaaWcbaGaaeOBaaqaba aaaaGccaGLOaGaayzkaaGaey4kaSYaaSGbaeaacaaI0aaabaGaaGOm aiaaiMdaaaaaaa@498C@ si ( Y/ Y n ) ( 6/ 29 ) 3 MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaamaabmaabaWaaSGbae aacaWGzbaabaGaamywamaaBaaaleaacaqGUbaabeaaaaaakiaawIca caGLPaaacqGHKjYOdaqadaqaamaalyaabaGaaGOnaaqaaiaaikdaca aI5aaaaaGaayjkaiaawMcaamaaCaaaleqabaGaaG4maaaaaaa@4050@
et Y, u′, v′ représentent le stimulus de couleur pris en considération et Yn, u′n, v′n représentent un stimulus achromatique spécifié de couleur blanche

Note 1 à l'article: Les correspondants approximatifs de clarté, saturation, chroma et teinte peuvent être calculés comme suit:

clarté CIE 1976:

  • L =116f( Y/ Y n )16 MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaaiaadYeadaahaaWcbe qaaiabgEHiQaaakiabg2da9iaaigdacaaIXaGaaGOnaiaadAgadaqa daqaamaalyaabaGaamywaaqaaiaadMfadaWgaaWcbaGaaeOBaaqaba aaaaGccaGLOaGaayzkaaGaeyOeI0IaaGymaiaaiAdaaaa@4259@

  • f( Y/ Y n )= ( Y/ Y n ) 1/3 MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaaiaadAgadaqadaqaam aalyaabaGaamywaaqaaiaadMfadaWgaaWcbaGaaeOBaaqabaaaaaGc caGLOaGaayzkaaGaeyypa0ZaaeWaaeaadaWcgaqaaiaadMfaaeaaca WGzbWaaSbaaSqaaiaab6gaaeqaaaaaaOGaayjkaiaawMcaamaaCaaa leqabaGaaGymaiaac+cacaaIZaaaaaaa@429E@ si ( Y/ Y n )> ( 6/ 29 ) 3 MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaamaabmaabaWaaSGbae aacaWGzbaabaGaamywamaaBaaaleaacaqGUbaabeaaaaaakiaawIca caGLPaaacqGH+aGpdaqadaqaamaalyaabaGaaGOnaaqaaiaaikdaca aI5aaaaaGaayjkaiaawMcaamaaCaaaleqabaGaaG4maaaaaaa@3FA3@
  • f( Y/ Y n )=( 841/ 108 )( Y/ Y n )+4/ 29 MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaaiaadAgadaqadaqaam aalyaabaGaamywaaqaaiaadMfadaWgaaWcbaGaaeOBaaqabaaaaaGc caGLOaGaayzkaaGaeyypa0ZaaeWaaeaadaWcgaqaaiaaiIdacaaI0a GaaGymaaqaaiaaigdacaaIWaGaaGioaaaaaiaawIcacaGLPaaadaqa daqaamaalyaabaGaamywaaqaaiaadMfadaWgaaWcbaGaaeOBaaqaba aaaaGccaGLOaGaayzkaaGaey4kaSYaaSGbaeaacaaI0aaabaGaaGOm aiaaiMdaaaaaaa@498C@ si ( Y/ Y n ) ( 6/ 29 ) 3 MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaamaabmaabaWaaSGbae aacaWGzbaabaGaamywamaaBaaaleaacaqGUbaabeaaaaaakiaawIca caGLPaaacqGHKjYOdaqadaqaamaalyaabaGaaGOnaaqaaiaaikdaca aI5aaaaaGaayjkaiaawMcaamaaCaaaleqabaGaaG4maaaaaaa@4050@

saturation u, v CIE 1976:

  • s uv =13 [ ( u u n ) 2 + ( v v n ) 2 ] 1/2 MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqipu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGacaGaciaabmqaamaabaabaaGcbaGaam4CamaaBa aaleaacaqG1bGaaeODaaqabaGccqGH9aqpcaaIXaGaaG4mamaadmaa baWaaeWaaeaaceWG1bGbauaacqGHsislceWG1bGbauaadaWgaaWcba GaamOBaaqabaaakiaawIcacaGLPaaadaahaaWcbeqaaiaaikdaaaGc cqGHRaWkdaqadaqaaiqadAhagaqbaiabgkHiTiqadAhagaqbamaaBa aaleaacaWGUbaabeaaaOGaayjkaiaawMcaamaaCaaaleqabaGaaGOm aaaaaOGaay5waiaaw2faamaaCaaaleqabaGaaGymaiaac+cacaaIYa aaaaaa@4DDE@

chroma u, v CIE 1976:

  • Δ C uv * = ( u *2 + v *2 ) 1/2 = L * s uv MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqipu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGacaGaaiaabmqaamaabaabaaGcbaGaeuiLdqKaam 4qamaaDaaaleaacaqG1bGaaeODaaqaaiaacQcaaaGccqGH9aqpdaqa daqaaiaadwhadaahaaWcbeqaaiaacQcacaaIYaaaaOGaey4kaSIaam ODamaaCaaaleqabaGaaiOkaiaaikdaaaaakiaawIcacaGLPaaadaah aaWcbeqaaiaaigdacaGGVaGaaGOmaaaakiabg2da9iaadYeadaahaa WcbeqaaiaacQcaaaGccaWGZbWaaSbaaSqaaiaabwhacaqG2baabeaa aaa@4BB4@

angle de teinte u, v CIE 1976:

  • h uv =arctan[ ( v v n )/ ( u u n ) 2 ]=arctan( v * / u * ) MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqipu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGacaGaciaabmqaamaabaabaaGcbaGaamiAamaaBa aaleaacaqG1bGaaeODaaqabaGccqGH9aqpcaqGHbGaaeOCaiaaboga caqG0bGaaeyyaiaab6gadaWadaqaamaalyaabaWaaeWaaeaaceWG2b GbauaacqGHsislceWG2bGbauaadaWgaaWcbaGaamOBaaqabaaakiaa wIcacaGLPaaaaeaadaqadaqaaiqadwhagaqbaiabgkHiTiqadwhaga qbamaaBaaaleaacaWGUbaabeaaaOGaayjkaiaawMcaamaaCaaaleqa baGaaGOmaaaaaaaakiaawUfacaGLDbaacqGH9aqpciGGHbGaaiOCai aacogacaGG0bGaaiyyaiaac6gadaqadaqaamaalyaabaGaamODamaa CaaaleqabaGaaiOkaaaaaOqaaiaadwhadaahaaWcbeqaaiaacQcaaa aaaaGccaGLOaGaayzkaaaaaa@59C7@

Note 2 à l'article: Voir aussi CIE 15, Colorimetry.

Note 3 à l'article: Voir aussi ISO/CIE 11664-5, Colorimetry – Part 5: CIE 1976 L*u*v* Colour Space and u', v' Uniform Chromaticity Scale Diagram.

Note 4 à l'article: Cet article était numéroté 845-03-54 dans l'IEC 60050-845:1987.


ar
فضاء الألوان طبقا للمواصفة القياسية للإنارة الدوليةCIE 1976

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

it
spazio del colore CIE 1976 L*u*v*
spazio del colore CIELUV

ko
CIE 1976 L* u* v* 색공간

ja
CIE1976L*u*v*色空間
CIELUV 色空間

pl
przestrzeń barw CIE 1976 L*, u*, v*, f

pt
espaço cromático L* u* v* CIE 1976

zh
CIE 1976 L*u*ν*色空间
CIELUV色空间

Publication date: 2020-12
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