Colorimetry - Part 6: CIEDE2000 colour-difference formula (ISO/CIE 11664-6:2022)

This document specifies the method of calculating colour differences according to the CIEDE2000
formula.
This document is applicable to input values of CIELAB L*, a*, b* coordinates calculated according to
ISO/CIE 11664-4. It can be used for the specification of the colour difference between two colour
stimuli perceived as belonging to reflecting or transmitting objects. This includes displays if they are
being used to simulate reflecting or transmitting objects and if the tristimulus values representing the
stimuli are appropriately normalized.
This document does not apply to colour stimuli perceived as belonging to areas that appear to be
emitting light as primary light sources or that appear to be specularly reflecting such light.

Farbmetrik - Teil 6: CIEDE2000‑Formel für den Farbabstand (ISO/CIE 11664-6:2022)

Dieses Dokument legt das Verfahren zur Berechnung von Farbabständen entsprechend der CIEDE2000-Formel fest.
Dieses Dokument gilt für Eingabewerte von CIELAB L* , a* , b* Koordinaten, die entsprechend ISO/CIE 11664 4 berechnet wurden. Es kann angewendet werden für die Festlegung des Farbabstands zwischen zwei Farbreizen, die als zu einem reflektierenden oder transmittierenden Objekt zugehörig empfunden werden. Dazu gehören Displays, wenn sie dazu verwendet werden, reflektierende oder transmittierende Objekte zu simulieren und wenn die Farbwerte, welche die Farbreize darstellen, in geeigneter Weise normiert sind.
Dieses Dokument gilt nicht für Farbreize, die von Flächen ausgehen, welche Licht als Selbstleuchter abstrahlen oder Licht durch Glanzeffekte spiegeln.

Colorimétrie - Partie 6: Formule de la différence de couleur CIEDE2000 (ISO/CIE 11664-6:2022)

Le présent document spécifie la méthode de calcul des différences de couleurs selon la formule CIEDE2000.
Il s'applique aux données initiales des coordonnées CIELAB L*, a*, b* calculées selon l’ISO/CIE 11664-4. Il peut être utilisé pour spécifier la différence de couleur entre deux stimuli de couleurs perçus comme appartenant à des objets réfléchissants ou transparents ou translucides. Sont inclus certains écrans d’affichage s’ils sont utilisés pour simuler des objets réfléchissants ou transparents ou translucides et si les composantes trichromatiques représentant les stimuli sont normalisées de manière appropriée.
Le présent document n’est pas applicable aux stimuli de couleurs perçus comme appartenant à des surfaces qui semblent émettre de la lumière comme des sources primaires de lumière, ou réfléchir spéculairement une telle lumière.

Kolorimetrija - 6. del: Formula barvne razlike CIEDE2000 (ISO/CIE 11664-6:2022)

General Information

Status
Published
Public Enquiry End Date
01-Jul-2022
Publication Date
14-Nov-2022
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
26-Oct-2022
Due Date
31-Dec-2022
Completion Date
15-Nov-2022

RELATIONS

Buy Standard

Standard
SIST EN ISO/CIE 11664-6:2022
English language
15 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day
Draft
oSIST prEN ISO/CIE/DIS 11664-6:2022
English language
12 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day

Standards Content (sample)

SLOVENSKI STANDARD
SIST EN ISO/CIE 11664-6:2022
01-december-2022
Nadomešča:
SIST EN ISO 11664-6:2016
Kolorimetrija - 6. del: Formula barvne razlike CIEDE2000 (ISO/CIE 11664-6:2022)
Colorimetry - Part 6: CIEDE2000 colour-difference formula (ISO/CIE 11664-6:2022)
Farbmetrik - Teil 6: CIEDE2000‑Formel für den Farbabstand (ISO/CIE 11664-6:2022)

Colorimétrie - Partie 6: Formule de la différence de couleur CIEDE2000 (ISO/CIE 11664-

6:2022)
Ta slovenski standard je istoveten z: EN ISO/CIE 11664-6:2022
ICS:
17.180.20 Barve in merjenje svetlobe Colours and measurement of
light
SIST EN ISO/CIE 11664-6:2022 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN ISO/CIE 11664-6:2022
---------------------- Page: 2 ----------------------
SIST EN ISO/CIE 11664-6:2022
EN ISO/CIE 11664-6
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2022
EUROPÄISCHE NORM
ICS 17.180.20 Supersedes EN ISO 11664-6:2016
English Version
Colorimetry - Part 6: CIEDE2000 colour-difference formula
(ISO/CIE 11664-6:2022)

Colorimétrie - Partie 6: Formule de la différence de Farbmetrik - Teil 6: CIEDE2000-Formel für den

couleur CIEDE2000 (ISO/CIE 11664-6:2022) Farbabstand (ISO/CIE 11664-6:2022)
This European Standard was approved by CEN on 13 August 2022.

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, Türkiye 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

© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO/CIE 11664-6:2022 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO/CIE 11664-6:2022
EN ISO/CIE 11664-6:2022 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

---------------------- Page: 4 ----------------------
SIST EN ISO/CIE 11664-6:2022
EN ISO/CIE 11664-6:2022 (E)
European foreword

This document (EN ISO/CIE 11664-6:2022) has been prepared by Technical Committee ISO/TC 274

"Light and lighting" 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 March 2023, and conflicting national standards shall

be withdrawn at the latest by March 2023.

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 11664-6:2016.

Any feedback and questions on this document should be directed to the users’ national standards

body/national committee. A complete listing of these bodies can be found on the CEN website.

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, Türkiye and the

United Kingdom.
Endorsement notice

The text of ISO/CIE 11664-6:2022 has been approved by CEN as EN ISO/CIE 11664-6:2022 without any

modification.
---------------------- Page: 5 ----------------------
SIST EN ISO/CIE 11664-6:2022
---------------------- Page: 6 ----------------------
SIST EN ISO/CIE 11664-6:2022
INTERNATIONAL ISO/CIE
STANDARD 11664-6
Second edition
2022-08
Colorimetry —
Part 6:
CIEDE2000 colour-difference formula
Colorimétrie —
Partie 6: Formule de la différence de couleur CIEDE2000
Reference number
ISO/CIE 11664-6:2022(E)
© ISO/CIE 2022
---------------------- Page: 7 ----------------------
SIST EN ISO/CIE 11664-6:2022
ISO/CIE 11664-6:2022(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO/CIE 2022

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on

the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below

or ISO’s member body in the country of the requester
ISO copyright office CIE Central Bureau
CP 401 • Ch. de Blandonnet 8 Babenbergerstraße 9/9A • A-1010 Vienna
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11 Phone: +43 1 714 3187
Fax: +41 22 749 09 47
Email: copyright@iso.org Email: ciecb@cie.co.at
Website: www.iso.org Website: www.cie.co.at
Published in Switzerland
© ISO/CIE 2022 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO/CIE 11664-6:2022
ISO/CIE 11664-6:2022(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction .................................................................................................................................................................................................................................v

1 S c op e ................................................................................................................................................................................................................................. 1

2 Nor m at i ve r ef er enc e s ..................................................................................................................................................................................... 1

3 Terms and definitions .................................................................................................................................................................................... 1

4 S y mb ol s ......................................................................................................................................................................................................................... 1

5 R ef er enc e c ond it ion s .......................................................................................................................................................................................2

6 C a lc u l at ion me t ho d ........................................................................................................................................................................................... 3

7 P a r a me t r ic f ac t or s ............................................................................................................................................................................................. 5

Annex A (informative) Three-component micro-spaces ................................................................................................................ 6

Bibliography ................................................................................................................................................................................................................................ 7

iii
© ISO/CIE 2022 – All rights reserved
---------------------- Page: 9 ----------------------
SIST EN ISO/CIE 11664-6:2022
ISO/CIE 11664-6:2022(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www.iso.org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to

the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see

www.iso.org/iso/foreword.html.

This document was prepared by the International Commission on Illumination (CIE) in cooperation

with Technical Committee ISO/TC 274, Light and lighting, in collaboration with the European Committee

for Standardization (CEN) Technical Committee CEN/TC 139, Paints and varnishes, in accordance with

the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).

This second edition cancels and replaces the first edition (ISO/CIE 11664-6:2014), of which it constitutes

a minor revision. The changes are as follows:
— normative references updated;
— previous Clause 3 split into Clauses 3 and 4;
— Clause 6: previous NOTE 1 changed to body text;
— minor editorial changes.

A list of all parts in the ISO/CIE 11664 series can be found on the ISO website and the CIE website.

Any feedback or questions on this document should be directed to the CIE Central Bureau or the user’s

national standards body. A complete listing of these bodies can be found at www.iso.org/members.html.

© ISO/CIE 2022 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO/CIE 11664-6:2022
ISO/CIE 11664-6:2022(E)
Introduction

The three-dimensional colour space produced by plotting CIE tristimulus values (X, Y, Z) in rectangular

coordinates is not visually uniform. Neither is the (x, y, Y) space nor the two-dimensional CIE (x, y)

chromaticity diagram. Equal distances in these spaces and the respective diagram do not represent

equally perceptible differences between colour stimuli. For this reason, the CIE has standardized two

more-nearly uniform colour spaces (known as CIELAB and CIELUV), whose coordinates are non-linear

functions of X, Y and Z. Numerical values representing approximately the relative magnitude of colour

differences can be described by simple Euclidean distances in these spaces or by more sophisticated

colour-difference formulae that improve the correlation with the relative perceived size of differences.

The p
...

SLOVENSKI STANDARD
oSIST prEN ISO/CIE/DIS 11664-6:2022
01-junij-2022
Kolorimetrija - 6. del: Formula barvne razlike CIEDE2000 (ISO/CIE FDIS- 11664-
6:2022)
Colorimetry - Part 6: CIEDE2000 Colour-difference formula (ISO/CIE FDIS- 11664-
6:2022)
Farbmetrik - Teil 6: CIEDE2000 Formel für den Farbabstand (ISO/CIE FDIS- 11664-
6:2022)

Colorimétrie - Partie 6: Formule d'écart de couleur CIEDE2000 (ISO/CIE FDIS- 11664-

6:2022)
Ta slovenski standard je istoveten z: prEN ISO/CIE/DIS 11664-6
ICS:
17.180.20 Barve in merjenje svetlobe Colours and measurement of
light
oSIST prEN ISO/CIE/DIS 11664-6:2022 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN ISO/CIE/DIS 11664-6:2022
---------------------- Page: 2 ----------------------
oSIST prEN ISO/CIE/DIS 11664-6:2022
FINAL
INTERNATIONAL ISO/CIE
DRAFT
STANDARD FDIS
11664-6
CIE
Colorimetry —
Secretariat: CIE
Voting begins on:
Part 6:
2022-04-19
CIEDE2000 colour-difference formula
Voting terminates on:
2022-07-12
Colorimétrie —
Partie 6: Formule d'écart de couleur CIEDE2000
Member bodies are requested to consult relevant national interests in ISO/TC
274 before casting their ballot to the e-Balloting application.
ISO/CEN PARALLEL PROCESSING
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/CIE FDIS 11664-6:2022(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO/CIE 2022
---------------------- Page: 3 ----------------------
oSIST prEN ISO/CIE/DIS 11664-6:2022
ISO/CIE FDIS 11664-6:2022(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO/CEI 2022

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on

the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below

or ISO’s member body in the country of the requester
ISO copyright office CIE Central Bureau
CP 401 • Ch. de Blandonnet 8 Babenbergerstraße 9/9A • A-1010 Vienna
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11 Phone: +43 1 714 3187
Fax: +41 22 749 09 47
Email: copyright@iso.org Email: ciecb@cie.co.at
Website: www.iso.org Website: www.cie.co.at
Published in Switzerland
© ISO/CIE 2022 – All rights reserved
---------------------- Page: 4 ----------------------
oSIST prEN ISO/CIE/DIS 11664-6:2022
ISO/CIE FDIS 11664-6:2022(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction .................................................................................................................................................................................................................................v

1 S c op e ................................................................................................................................................................................................................................. 1

2 Nor m at i ve r ef er enc e s ..................................................................................................................................................................................... 1

3 Terms and definitions .................................................................................................................................................................................... 1

4 S y mb ol s ......................................................................................................................................................................................................................... 1

5 R ef er enc e c ond it ion s .......................................................................................................................................................................................2

6 C a lc u l at ion me t ho d ........................................................................................................................................................................................... 3

7 P a r a me t r ic f ac t or s ............................................................................................................................................................................................. 5

Annex A (informative) Three-component micro-spaces ................................................................................................................ 6

Bibliography ................................................................................................................................................................................................................................ 7

iii
© ISO/CIE 2022 – All rights reserved
---------------------- Page: 5 ----------------------
oSIST prEN ISO/CIE/DIS 11664-6:2022
ISO/CIE FDIS 11664-6:2022(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www.iso.org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to

the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see

www.iso.org/iso/foreword.html.

This document was prepared by the International Commission on Illumination (CIE) in cooperation

with Technical Committee ISO/TC 274, Light and lighting, in collaboration with the European Committee

for Standardization (CEN) Technical Committee CEN/TC 139, Paints and varnishes, in accordance with

the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).

This second edition cancels and replaces the first edition (ISO/CIE 11664-6:2014), of which it constitutes

a minor revision. The changes are as follows:
— normative references updated;
— previous Clause 3 split into Clauses 3 and 4;
— Clause 6: previous NOTE 1 changed to body text;
— minor editorial changes.

A list of all parts in the ISO/CIE 11664 series can be found on the ISO website and the CIE website.

Any feedback or questions on this document should be directed to the CIE Central Bureau or the user’s

national standards body. A complete listing of these bodies can be found at www.iso.org/members.html.

© ISO/CIE 2022 – All rights reserved
---------------------- Page: 6 ----------------------
oSIST prEN ISO/CIE/DIS 11664-6:2022
ISO/CIE FDIS 11664-6:2022(E)
Introduction

The three-dimensional colour space produced by plotting CIE tristimulus values (X, Y, Z) in rectangular

coordinates is not visually uniform. Neither is the (x, y, Y) space nor the two-dimensional CIE (x, y)

chromaticity diagram. Equal distances in these spaces and diagrams do not represent equally

perceptible differences between colour stimuli. For this reason, the CIE has standardized two more-

nearly uniform colour spaces (known as CIELAB and CIELUV), whose coordinates are non-linear

functions of X, Y and Z. Numerical values representing approximately the relative magnitude of colour

differences can be described by simple Euclidean distances in these spaces or by more sophisticated

colour-difference formulae that improve the correlation with the relative perceived size of differences.

The purpose of this document is to define one such formula, the CIEDE2000 formula. This document is

based on CIE 142:2001.

The formula is an extension of the CIE 1976 L*a*b* colour-difference formula (ISO/CIE 11664-4) with

corrections for variation in colour-difference perception dependent on lightness, chroma, hue and

chroma-hue interaction. Reference conditions define material and viewing environment characteristics

to which the formula applies.
© ISO/CIE 2022 – All rights reserved
---------------------- Page: 7 ----------------------
oSIST prEN ISO/CIE/DIS 11664-6:2022
---------------------- Page: 8 ----------------------
oSIST prEN ISO/CIE/DIS 11664-6:2022
FINAL DRAFT INTERNATIONAL STANDARD ISO/CIE FDIS 11664-6:2022(E)
Colorimetry —
Part 6:
CIEDE2000 colour-difference formula
1 S cope

This document specifies the method of calculating colour differences according to the CIEDE2000

formula.

This document is applicable to input values of CIELAB L*, a*, b* coordinates calculated according to

ISO/CIE 11664-4. It can be used for the specification of the colour difference between two colour

stimuli perceived as belonging to reflecting or transmitting objects. This includes displays if they are

being used to simulate reflecting or transmitting objects and if the tristimulus values representing the

stimuli are appropriately normalized.

This document does not apply to colour stimuli perceived as belonging to areas that appear to be

emitting light as primary light sources or that appear to be specularly reflecting such light.

2 Normat ive references

The following documents are referred to in the text in such a way that some or all of their cont

...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.