EN ISO/CIE 11664-4:2019
(Main)Colorimetry - Part 4: CIE 1976 L*a*b* colour space (ISO/CIE 11664-4:2019)
Colorimetry - Part 4: CIE 1976 L*a*b* colour space (ISO/CIE 11664-4:2019)
This document specifies a method of calculating the coordinates of the CIE 1976 L*a*b* colour space, including correlates of lightness, chroma and hue. It includes two methods for calculating Euclidean distances in this space to represent the perceived magnitude of colour differences.
This document is applicable to tristimulus values calculated using colour-matching functions of the CIE 1931 standard colorimetric system or the CIE 1964 standard colorimetric system. This document can be used for the specification of colour stimuli perceived as belonging to a reflecting or transmitting object, where a three-dimensional space more uniform than tristimulus space is required.
This document does not apply to colour stimuli perceived as belonging to an area that appears to be emitting light as a primary light source, or that appears to be specularly reflecting such light.
This document is applicable to self-luminous displays, such as cathode ray tubes, if they are being used to simulate reflecting or transmitting objects and if the stimuli are appropriately normalized.
Calculating the reverse transformation is shown in Annex A.
Farbmetrik - Teil 4: CIE 1976 L*a*b* Farbraum (ISO/CIE 11664-4:2019)
Dieses Dokument legt das Verfahren zum Berechnen der Koordinaten des L*a*b*-Farbenraums CIE 1976 fest, Korrelate von Helligkeit, Buntheit und Buntton eingeschlossen. Sie legt zwei Verfahren zum Berechnen euklidischer Abstände in diesem Farbenraum fest, die der empfindungsgemäßen Größe der Farbabstände entsprechen.
Dieses Dokument gilt für Farbwerte, die nach den Spektralwertfunktionen des Normvalenzsystems CIE 1931 oder des Normvalenzsystems CIE 1964 berechnet sind. Dieses Dokument kann angewendet werden für die Festlegung von Farbreizen, die als zu einem reflektierenden oder transmittierenden Objekt zugehörig empfunden wurden, wenn ein dreidimensionaler Farbenraum, der gleichabständiger ist als der Farbenraum der Farbwerte, benötigt wird.
Dieses Dokument ist nicht anwendbar auf Farbreize, die als zu einer Fläche zugehörig empfunden wurden, die Licht als eine primäre Lichtquelle zu emittieren oder solches Licht gerichtet zu reflektieren scheint.
Dieses Dokument gilt auch für selbstleuchtende Displays, wie Kathodenstrahlröhren, wenn sie dazu verwendet werden, reflektierende oder transmittierende Objekte zu simulieren, und wenn die Farbreize in geeigneter Weise normiert sind.
Die Berechnung der Rücktransformation wird in Anhang A dargestellt.
Colorimétrie - Partie 4: Espace chromatique L*a*b* CIE 1976 (ISO/CIE 11664-4:2019)
Le présent document fixe une méthode de calcul des coordonnées de l'espace chromatique L*a*b* CIE 1976 ainsi que des correspondants de clarté, de chroma et de teinte. Il donne deux méthodes de calcul de la distance euclidienne dans cet espace, représentant la valeur perçue des différences de couleur.
Le présent document est applicable aux composantes trichromatiques calculées en utilisant les fonctions colorimétriques du système colorimétrique CIE 1931 normalisé ou du système colorimétrique CIE 1964 normalisé. Le présent document peut être utilisé pour la spécification de stimulus de couleur se rapportant à des objets qui réfléchissent ou qui transmettent la lumière, pour lesquels un espace chromatique tridimensionnel plus uniforme que le système trichromatique est nécessaire.
Le présent document ne s'applique pas à des stimulus de couleur se rapportant à des surfaces qui paraissent émettre de la lumière comme le font les sources primaires de lumière ou qui apparaissent réfléchir spéculairement de telles lumières.
Le présent document est applicable aux afficheurs auto-lumineux, tels que des tubes cathodiques, quand ils sont utilisés pour simuler des objets réfléchissants ou transparents, à condition que les stimulus soient convenablement normalisés.
Le calcul de la transformation inverse est présenté dans l'Annexe A.
Kolorimetrija - 4. del: Barvni prostor CIE 1976 L*a*b* (ISO/CIE 11664-4:2019)
Ta dokument določa metodo za izračun koordinat barvnega prostora CIE 1976 L*a*b*, vključno s korelacijo svetlobe, barv in odtenka. Vključuje dve metodi za izračun evklidskih razdalj v tem prostoru za označitev magnitude teh barvnih razlik.
Ta dokument se uporablja za tristimulusne vrednosti, izračunane z uporabo barvno skladnih funkcij kolorimetričnega sistema v skladu s standardom CIE 1931 ali kolorimetričnega sistema v skladu s standardom CIE 1964. Ta dokument se lahko uporablja za specifikacijo barvnih stimulov, dojetih kot refleksni ali oddajni predmeti, pri čemer se zahteva tridimenzionalni prostor, enotnejši od tristimulusnega prostora.
Ta dokument se ne uporablja za barvne dražljaje, zaznane, da pripadajo območju, za katerega je videti, da oddaja svetlobo kot primarni svetlobni vir, ali za katerega je videti, da sijajno odseva takšno svetlobo.
Ta dokument se uporablja za samosvetilne zaslone, kot so katodne cevi, če se uporabljajo za simulacijo predmeta, ki odbija ali oddaja svetlobo, in če so dražljaji ustrezno normalizirani. Izračun povratne pretvorbe je prikazan v dodatku A.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO/CIE 11664-4:2019
01-september-2019
Nadomešča:
SIST EN ISO 11664-4:2011
Kolorimetrija - 4. del: Barvni prostor CIE 1976 L*a*b* (ISO/CIE 11664-4:2019)
Colorimetry - Part 4: CIE 1976 L*a*b* colour space (ISO/CIE 11664-4:2019)
Farbmetrik - Teil 4: CIE 1976 L*a*b* Farbenraum (ISO/CIE 11664-4:2019)
Colorimétrie - Partie 4: Espace chromatique L*a*b* CIE 1976 (ISO 11664-4:2008)
Ta slovenski standard je istoveten z: EN ISO/CIE 11664-4:2019
ICS:
17.180.20 Barve in merjenje svetlobe Colours and measurement of
light
SIST EN ISO/CIE 11664-4:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO/CIE 11664-4:2019
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SIST EN ISO/CIE 11664-4:2019
EN ISO/CIE 11664-4
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2019
EUROPÄISCHE NORM
ICS 17.180.20 Supersedes EN ISO 11664-4:2011
English Version
Colorimetry - Part 4: CIE 1976 L*a*b* colour space
(ISO/CIE 11664-4:2019)
Colorimétrie - Partie 4: Espace chromatique L*a*b* CIE Farbmetrik - Teil 4: CIE 1976 L*a*b* Farbenraum
1976 (ISO/CIE 11664-4:2019) (ISO/CIE 11664-4:2019)
This European Standard was approved by CEN on 8 June 2019.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO/CIE 11664-4:2019 E
worldwide for CEN national Members.
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SIST EN ISO/CIE 11664-4:2019
EN ISO/CIE 11664-4:2019 (E)
Contents Page
European foreword . 3
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SIST EN ISO/CIE 11664-4:2019
EN ISO/CIE 11664-4:2019 (E)
European foreword
This document (EN ISO/CIE 11664-4:2019) has been prepared by Technical Committee CEI
"International Commission on Illumination" in collaboration with Technical Committee CEN/TC 139
“Paints and varnishes” the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by January 2020, and conflicting national standards shall
be withdrawn at the latest by January 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 11664-4:2011.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO/CIE 11664-4:2019 has been approved by CEN as EN ISO/CIE 11664-4:2019 without any
modification.
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SIST EN ISO/CIE 11664-4:2019
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SIST EN ISO/CIE 11664-4:2019
INTERNATIONAL ISO/CIE
STANDARD 11664-4
First edition
2019-06
Colorimetry —
Part 4:
CIE 1976 L*a*b* colour space
Colorimétrie —
Partie 4: Espace chromatique L*a*b* CIE 1976
Reference number
ISO/CIE 11664-4:2019(E)
©
ISO/CIE 20
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