SIST EN 61966-12-2:2014

Multimedia systems and equipment - Colour measurement and management - Part 12-2: Simple Metadata format for identification of colour gamut (IEC 61966-12-2:2014)

EN IEC 61966-12-2 specifies the colour gamut metadata format for video systems intended for use in CE (Consumer Electronics) devices. The metadata specified in this part of IEC 61966 is limited to the gamut description of additive three primary colours type displays whose white and black points have the same chromaticity. It is fundamentally based on the conventional VESA-EDID format. When associated with content, the simple metadata format defines the gamut for which the content was created. It can be used by the display for controlled colour reproduction even if the display’s colour gamut is different from that of the content. When associated with a display, the simple metadata format defines the display colour gamut. It can be used during content creation to enable improved colour reproduction. This standard provides the simplest, but unambiguous solution for typical CE devices that are based on colour gamut information communication.

Multimediasysteme und -geräte - Farbmessung und Farbmanagement - Teil 12-2: Einfaches Metadaten-Format zur Erkennung von Farbumfängen (IEC 61966-12-2:2014)

Systèmes et équipements multimédias - mesure et gestion de couleur - Partie 12-2: format de métadonnées simple pour l'identification de la gamme de couleurs (CEI 61966-12-2:2014)

L'IEC 61966-12:2014 spécifie le format des métadonnées des gammes de couleurs pour les systèmes vidéo destinés à être utilisés dans les dispositifs électroniques grand public (EGP). Les métadonnées spécifiées dans la présente partie de l'IEC 61966 se limitent à la description des gammes de couleurs des écrans à trois couleurs primaires additives dont les points blancs et noirs ont la même chromaticité. Elles reposent essentiellement sur le format conventionnel VESA-EDID.
Lorsqu'il est associé au contenu, le format simple des métadonnées définit la gamme de couleurs pour laquelle le contenu a été créé. Celles-ci peuvent être utilisées par l'écran pour contrôler la reproduction des couleurs, même si la gamme de couleurs de l'écran est différente de celle du contenu.
Lorsqu'il est associé à un écran, le format simple des métadonnées définit la gamme de couleurs de l'écran. Celles-ci peuvent servir pendant la création du contenu, pour permettre une meilleure reproduction des couleurs.
La présente norme fournit la solution la plus simple, mais sans ambiguïté, pour les dispositifs EGP types qui reposent sur la communication d'informations de gamme de couleurs.

Večpredstavnostni sistemi in oprema - Merjenje in urejanje barv - 12-2. del: Enostavni metapodatkovni format za ugotavljanje barvne lestvice (Gamut ID) (IEC 61966-12-2:2014)

Standard EN IEC 61966-12-2 določa metapodatkovno obliko zapisa barvne lestvice za video sisteme, namenjene uporabi v napravah zabavne elektronike (CE). Metapodatki, določeni v tem delu standarda IEC 61966, so omejeni na opis lestvice za vrste zaslonov s tremi aditivnimi primarnimi barvami, katerih bele in črne točke imajo enako kromatičnost. Ta oblika zapisa v osnovi temelji na konvencionalni obliki zapisa VESA-EDID. Ko je enostavna metapodatkovna oblika zapisa povezana z vsebino, ta oblika zapisa definira lestvico, za katero je bila vsebina ustvarjena. Uporabiti jo je mogoče za nadzorovano reprodukcijo barv, tudi če se barvna lestvica zaslona razlikuje od barvne lestvice vsebine. Ko je povezana z zaslonom, enostavna metapodatkovna oblika zapisa definira barvno lestvico zaslona. S to obliko zapisa je med ustvarjanjem vsebine mogoče izboljšati reprodukcijo barv. Ta standard zagotavlja enostavno, vendar nedvoumno rešitev za običajne naprave CE, temelječe na komunikaciji informacij o barvni lestvici.

General Information

• Status: Published
• Publication Date: 01-Sep-2014
• ICS: 17.180.20 - Colours and measurement of light
• ICS: 33.160.60 - Multimedia systems and teleconferencing equipment
• Technical Committee: AVM - Audio, video and multimedia systems and equipment
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 18-Jun-2014
• Due Date: 23-Aug-2014
• Completion Date: 02-Sep-2014
• Ref Project: EN 61966-12-2:2014 - Multimedia systems and equipment - Colour measurement and management - Part 12-2: Simple metadata format for identification of colour gamut

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 61966-12-2:2014
01-oktober-2014
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ICS:
17.180.20 Barve in merjenje svetlobe Colours and measurement of
light
33.160.60 9HþSUHGVWDYQLPXOWLPHGLMVNL Multimedia systems and
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SIST EN 61966-12-2:2014

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SIST EN 61966-12-2:2014


EUROPEAN STANDARD EN 61966-12-2

NORME EUROPÉENNE

EUROPÄISCHE NORM
May 2014
ICS 17.180.20; 33.160

English Version
Multimedia systems and equipment - Colour measurement and
management - Part 12-2: Simple metadata format for
identification of colour gamut
(IEC 61966-12-2:2014)
Systèmes et équipements multimédias - mesure et gestion Multimediasysteme und -geräte - Farbmessung und
de couleur - Partie 12-2: format de métadonnées simple Farbmanagement - Teil 12-2: Einfaches Metadaten-Format
pour l'identification de la gamme de couleurs zur Erkennung von Farbumfängen
(CEI 61966-12-2:2014) (IEC 61966-12-2:2014)
This European Standard was approved by CENELEC on 2014-05-22. CENELEC 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 CENELEC 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 CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.


European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 61966-12-2:2014 E

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SIST EN 61966-12-2:2014
EN 61966-12-2:2014 - 2 -
Foreword
The text of document 100/2129/CDV, future edition 1 of IEC 61966-12-2, prepared by technical area 2:
Colour measurement and management, of IEC technical committee 100: Audio, video and multimedia
systems and equipment was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
EN 61966-12-2:2014.
The following dates are fixed:
(dop) 2015-02-22
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2017-05-22
• latest date by which the national
standards conflicting with the
document have to be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent
rights.
Endorsement notice
The text of the International Standard IEC 61966-12-2:2014 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 61966-2-5 NOTE Harmonised in EN 61966-2-5 (not modified).

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SIST EN 61966-12-2:2014
- 3 - EN 61966-12-2:2014

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD

applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu


Publication Year Title EN/HD Year

IEC 60050-845 -  International Electrotechnical Vocabulary - -
(IEV) -- Chapter 845: Lighting
IEC 61966-2-4 -  Multimedia systems and equipment - Colour EN 61966-2-4 -
measurement and management -- Part 2-4:
Colour management - Extended-gamut YCC
colour space for video applications - xvYCC
IEC 61966-12-1 2011 Multimedia systems and equipment - Colour EN 61966-12-1 2011
measurement and management -- Part 12-1:
Metadata for identification of colour gamut
(Gamut ID)
ISO 15076-1 2005 Image technology colour management - - -
Architecture, profile format and data
structure -- Part 1: Based on ICC.1:2004-10

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SIST EN 61966-12-2:2014



IEC 61966-12-2

®


Edition 1.0 2014-04




INTERNATIONAL



STANDARD



















Multimedia systems and equipment – Colour measurement and management –

Part 12-2: Simple metadata format for identification of colour gamut



























INTERNATIONAL

ELECTROTECHNICAL

COMMISSION

PRICE CODE
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ICS 17.180.20; 33.160 ISBN 978-2-8322-1481-7





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® Registered trademark of the International Electrotechnical Commission

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SIST EN 61966-12-2:2014
– 2 – IEC 61966-12-2:2014 © IEC 2014
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Simple description of gamut. 7
5 Relationship with IEC 61966-12-1 . 9
Annex A (informative) Conversion from IEC 61966-12-2 to IEC 61966-12-1 simple

profile . 11
Annex B (informative) Example of simple metadata format and conversion to
IEC 61966-12-1 simple profile . 13
Bibliography . 17

Figure 1 – The colour gamut of additive three primary colours type display . 8
Figure 2 – IEC 61966-12-1 full/medium profile . 9
Figure 3 – IEC 61966-12-1 simple profile and IEC 61966-12-2 . 9

Table 1 – Simple metadata format for identification of colour gamut . 7
Table 2 – Differences of IEC 61966-12-1 simple profile and IEC 61966-12-2 . 10
Table B.1 – Colour gamut for IEC 61966-2-5 opRGB . 13
Table B.2 – Encoded simple metadata format . 13
Table B.3 – Conversion result to CIE-XYZ values for five colour vertices . 14
Table B.4 – Example for the header . 14
Table B.5 – Example for the header of description of gamut geometry . 14
Table B.6 – Example of definition of vertices . 15
Table B.7 – Example of encoded colour space coordinates for vertices . 15

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SIST EN 61966-12-2:2014
IEC 61966-12-2:2014 © IEC 2014 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

MULTIMEDIA SYSTEMS AND EQUIPMENT –
COLOUR MEASUREMENT AND MANAGEMENT –

Part 12-2: Simple metadata format for identification of colour gamut

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61966-12-2 has been prepared by technical area 2: Colour
measurement and management, of IEC technical committee 100: Audio, video and multimedia
systems and equipment.
The text of this standard is based on the following documents:
CDV Report on voting
100/2129/CDV 100/2276/RVC

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.

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SIST EN 61966-12-2:2014
– 4 – IEC 61966-12-2:2014 © IEC 2014
A list of alll parts of the IEC 61966 series, published under the general title Multimedia
systems and equipment – Colour measurement and management, can be found on the IEC
website.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

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SIST EN 61966-12-2:2014
IEC 61966-12-2:2014 © IEC 2014 – 5 –
INTRODUCTION
New technologies in capturing and displaying wide-gamut colour images enable a new market
of wide-gamut video colour content creation. Recent video standards for wide gamut colour
space encoding such as IEC 61966-2-4 (xvYCC) were developed in order to be able to
distribute content with a colour gamut that is extended with respect to classical colour gamuts
such as defined by standards ITU-R BT.601 (standard definition television) and ITU-R BT.709
(high definition television). With the increasing popularity of wide gamut and high dynamic
range contents and displays, the variety of colour gamuts of displays is expected to increase.
This issue can be an obstacle to adoption of wide-gamut video colour contents in professional
content creation since the compatibility of the contents to the employed displays, as well as
the compatibility among different displays, is not ensured. The term display includes here any
video colour reproduction equipment, such as direct view displays and projectors. Thanks to
improvements in technology, the variety of colour gamuts and colour reproduction capacities
of displays increases while the colour gamut and the colour encoding rules of existing colour
space encoding standards are fixed.
To address this issue, IEC 61966-12-1: “Metadata for identification of colour gamut (Gamut
ID)” specifies a colour gamut metadata scheme for video systems including information for
colour reproduction. This metadata can apply to video content or displays. More specifically,
improvements can be achieved if the wide-gamut colour content is created with the knowledge
of the display colour gamut as well as if the colour reproduction in the display is done with the
knowledge of the colour gamut of the pictorial content.
IEC 61966-12-1 has the capability to describe arbitrary 3D colour gamuts in a given colour
space and include the full/medium profile for professional use and the simple profile for
consumer use with easier product implementation. This approach is effective, but some
ambiguities can occur in practical use. For example, if typical CE devices are able to decode
the simple profile only, due to CPU and software limitations.
In this case, even if a sender device and a receiver device are "based on IEC 61966-12-1
standard",
a) the receiver device cannot handle the Gamut ID of incoming contents, if the sender device
sends only full or medium profile.
b) the sender device should convert a full profile to a simple one for CE-devices, if the
receiver can receive the simple profile only. But the conversi
...