Colorimetry - Part 4: CIE 1976 L*a*b* Colour space (ISO 11664-4:2008)

ISO 11664-4:2008 specifies the 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.
ISO 11664-4:2008 is applicable to tristimulus values calculated using colour-matching functions of the CIE 1931 standard colorimetric system or the CIE 1964 standard colorimetric system. ISO 11664-4:2008 may 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. It 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. ISO 11664-4:2008 does apply to self-luminous displays, like cathode ray tubes, if they are being used to simulate reflecting or transmitting objects and if the stimuli are appropriately normalized.

Farbmetrik - Teil 4: CIE 1976 L*a*b* Farbenraum (ISO 11664-4:2008)

Diese Internationale Norm 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 Farb-abstände entsprechen.
Diese Norm gilt für Farbwerte, die nach den Spektralwertfunktionen des Normvalenzsystems CIE 1931 oder des Normvalenzsystems CIE 1964 berechnet sind. Diese Norm 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. Sie 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. Diese Norm 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.

Colorimétrie - Partie 4: Espace chromatique L*a*b* CIE 1976 (ISO 11664-4:2008)

L'ISO 11664-4:2008 spécifie la 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. Elle donne deux méthodes de calcul de la distance euclidienne dans cet espace, représentant la valeur perçue des différences de couleur.
L'ISO 11664-4:2008 est applicable aux composantes trichromatiques calculées en utilisant les fonctions colorimétriques du système colorimétrique CIE 1931 normalisé ou du système colorimétrique CIE 1964 normalisé. Elle peut être utilisée 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. Elle 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. L'ISO 11664-4:2008 s'applique 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.

Kolorimetrija - 4. del: CIE 1976 L*a*b* barvni prostor (ISO 11664-4:2008)

ISO 11664-4:2008 določa metodo za izračun koordinat barvnega prostora CIE 1976 L*a*b*, vključno s korelati svetlosti, kromatičnosti in barve. Vključuje dve metodi za izračun evklidskih razdalj v tem prostoru, ki predstavljajo zaznan obseg razlik v barvah.
ISO 11664-4:2008 velja za vrednosti tristimulusa, ki se izračunajo z uporabo funkcije barvnega usklajevanja kolorimetričnega sistema po standardu CIE 1931 ali kolorimetričnega sistema po standardu CIE 1964. ISO 11664-4:2008 se lahko uporablja za specifikacijo barvnih dražljajev, ki se zaznajo kot del refleksijskega ali transmisijskega objekta, pri katerem je potreben trodimenzionalni prostor, enotnejši od tristimulusnega prostora. Ne velja za barvne dražljaje, ki se zaznajo kot del območja, ki na prvi pogled oddaja svetlobo kot primarni vir svetlobe ali ki na prvi pogled tako svetlobo zrcalno odbija. ISO 11664-4:2008 velja za samosvetleče zaslone, kot so zasloni s katodnimi cevmi, če se uporabljajo kot simulacija refleksijskih ali transmisijskih objektov in če se dražljaji ustrezno normalizirajo.

General Information

Status
Withdrawn
Publication Date
19-Apr-2011
Withdrawal Date
16-Jul-2019
Current Stage
9960 - Withdrawal effective - Withdrawal
Completion Date
17-Jul-2019

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SLOVENSKI STANDARD
SIST EN ISO 11664-4:2011
01-julij-2011
Kolorimetrija - 4. del: CIE 1976 L*a*b* barvni prostor (ISO 11664-4:2008)
Colorimetry - Part 4: CIE 1976 L*a*b* Colour space (ISO 11664-4:2008)
Farbmetrik - Teil 4: CIE 1976 L*a*b* Farbenraum (ISO 11664-4:2008)
Colorimétrie - Partie 4: Espace chromatique L*a*b* CIE 1976 (ISO 11664-4:2008)
Ta slovenski standard je istoveten z: EN ISO 11664-4:2011
ICS:
17.180.20 Barve in merjenje svetlobe Colours and measurement of
light
SIST EN ISO 11664-4:2011 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 11664-4:2011

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SIST EN ISO 11664-4:2011


EUROPEAN STANDARD
EN ISO 11664-4

NORME EUROPÉENNE

EUROPÄISCHE NORM
April 2011
ICS 17.180.20
English Version
Colorimetry - Part 4: CIE 1976 L*a*b* Colour space (ISO 11664-
4:2008)
Colorimétrie - Partie 4: Espace chromatique L*a*b* CIE Farbmetrik - Teil 4: CIE 1976 L*a*b* Farbenraum (ISO
1976 (ISO 11664-4:2008) 11664-4:2008)
This European Standard was approved by CEN on 17 March 2011.

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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11664-4:2011: E
worldwide for CEN national Members.

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SIST EN ISO 11664-4:2011
EN ISO 11664-4:2011 (E)
Contents Page
Foreword .3

2

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SIST EN ISO 11664-4:2011
EN ISO 11664-4:2011 (E)
Foreword
The text of ISO 11664-4:2008 has been prepared by Technical Committee CIE “International Commission on
Illumination” of the International Organization for Standardization (ISO) and has been taken over as
EN ISO 11664-4:2011 by 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 October 2011, and conflicting national standards shall be withdrawn at
the latest by October 2011.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
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, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 11664-4:2008 has been approved by CEN as a EN ISO 11664-4:2011 without any
modification.
3

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SIST EN ISO 11664-4:2011

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SIST EN ISO 11664-4:2011

INTERNATIONAL ISO
STANDARD 11664-4
CIE S 014-4/E
First edition
2008-11-01


Colorimetry —
Part 4:
CIE 1976 L*a*b* Colour space
Colorimétrie —
Partie 4: Espace chromatique L*a*b* CIE 1976




Reference number
ISO 11664-4:2008(E)
CIE S 014-4/E:2007
©
ISO 2008

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SIST EN ISO 11664-4:2011
ISO 11664-4:2008(E)
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