IEC 61966-12-1:2011

Multimedia systems and equipment - Colour measurement and management - Part 12-1: Metadata for identification of colour gamut (Gamut ID)

IEC 61966-12-1:2011 defines the colour gamut metadata scheme for video systems and similar applications. The metadata can be associated with wide gamut video colour content or to a piece of equipment to display the content. The colour gamut metadata may cover associated colour encoding information, which includes all information required for a controlled colour reproduction, when such information is not provided by the colour encoding specification. This bilingual version (2011-12) corresponds to the monolingual English version, published in 2011-01.

Systèmes et appareils multimédia - Mesure et gestion de la couleur - Partie 12-1: Métadonnées d'identification des gammes de couleurs (Gamut ID)

La CEI 61966-12-1:2011 définit l'agencement des métadonnées des gammes de couleurs destiné aux systèmes vidéo et applications similaires. Les métadonnées peuvent être associées à un contenu vidéo à gamme de couleurs étendue ou à un appareil servant à afficher ce contenu. Les métadonnées de gammes de couleurs peuvent intégrer des informations associées de codage des couleurs, dont toutes celles nécessaires à une reproduction contrôlée des couleurs, lorsque ces informations ne sont pas fournies par la spécification du codage des couleurs. La présente version bilingue (2011-12), correspond à la version anglaise monolingue publiée en 2011-01.

General Information

• Status: Published
• Publication Date: 11-Jan-2011
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 17.180.20 - Colours and measurement of light
• ICS: 33.160.40 - Video systems
• Technical Committee: TC 100 - Audio, video and multimedia systems and equipment
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 21-Sep-2020

Relations

• Revised: IEC 61966-12-1:2020 - Multimedia systems and equipment - Colour measurement and management - Part 12-1: Metadata for identification of colour gamut (Gamut ID)
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61966-12-1 ®
Edition 1.0 2011-01
INTERNATIONAL
STANDARD
colour
inside
Multimedia systems and equipment – &olour measurement and management –
Part 12-1: Metadata for identification of colour gamut (Gamut ID)

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form

or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester.

If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,

please contact the address below or your local IEC member National Committee for further information.

IEC Central Office
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About the IEC
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International Standards for all electrical, electronic and related technologies.

About IEC publications
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IEC 61966-12-1 ®
Edition 1.0 2011-01
INTERNATIONAL
STANDARD
colour
inside
Multimedia systems and equipment – &olour measurement and management –
Part 12-1: Metadata for identification of colour gamut (Gamut ID)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
W
ICS 17.180.20; 33.160 ISBN 978-2-88912-309-4
– 2 – 61966-12-1 Ó IEC:2011(E)

CONTENTS
FOREW ORD . 4

INTRODUCTION . 6

1 Sc o pe . 7

2 Normative references . 7

3 Terms and definitions . 8

4 Abbrev iations . 8

5 Overview . 8

6 Header of Gamut ID metadata. 9
7 Description of gamut geometry (full profile) . 10
7.1 General . 10
7.2 Gamut geometry . 11
7.3 Header of description of gamut geometry. 12
7.4 Gamut instances . 14
7.5 Gamut hulls . 16
7.6 Gamut component . 17
7.6.1 General . 17
7.6.2 Packing of face indices . 17
7.7 Faces . 18
7.7.1 General . 18
7.7.2 Packing of vertex indices . 19
7.8 Vertices . 19
7.8.1 General . 19
7.8.2 Packing of colour space coordinates for vertices . 20
8 Description of gamut geometry (medium and simple profiles) . 21
8.1 General . 21
8.2 Medium profile . 21
8.3 Simple profile . 21
9 Description of colour reproduction . 22
Annex A (informative) Size of Gamut ID metadata . 25
Annex B (informative) Motivation and requirements . 26
Annex C (informative) Use of profiles . 32

Annex D (informative) Example of Gamut ID metadata in simple profile . 34
Bibliography . 38

Figure 1 – Logical structure of the description of gamut geometry (full profile) . 11
Figure B.1 – Scope of Gamut ID – Generation and use of metadata are not specified . 27
Figure B.2 – Example of a description of gamut geometry in CIEXYZ colour space
consisting of a set of triangular faces. 28
Figure B.3 – Example of a gamut with identified ridge due to colorant channels . 30
Figure B.4 – Example of a non-convex gamut with two convex gamut hulls. 31

Table 1 – Format of Gamut ID metadata . 8
Table 2 – Header of Gamut ID metadata . 9
Table 3 – Bit depth for encoding of a colour space coordinate . 10

61966-12-1 Ó IEC:2011(E) – 3 –

Table 4 – Description of gamut geometry . 12

Table 5 – Header of description of gamut geometry . 13

Table 6 – Gamut instances . 14

Table 7 – ith Gamut instance . 15

Table 8 – Gamut hulls . 16

Table 9 – hth gamut hull . 16

Table 10 – Definition of gamut components . 17

Table 11 – cth gamut component. 17

Table 12 – Example for packing of gamut components . 18
Table 13 – Definition of faces . 18
Table 14 – Example for packing of faces . 19
Table 15 – Vertices. 20
Table 16 – Packing of 10-bit colour space coordinates . 20
Table 17 – Packing of 12-bit colour space coordinates . 21
Table 18 – Description of gamut geometry (simple profile) . 22
Table 19 – Header of description of gamut geometry (simple profile) . 22
Table 20 – Definition of vertices (simple profile) . 22
Table B.1 – Requirements and Gamut ID features . 29
Table C.1 – Profiles for the description of gamut geometry . 32
Table D.1 – Colour gamut for digital cinema . 34
Table D.2 – Example for the header . 34
Table D.3 – Example for the header of description of gamut geometry . 35
Table D.4 – Example of definition of vertices . 35

– 4 – 61966-12-1 Ó IEC:2011(E)

INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
MULTIMEDIA SYSTEMS AND EQUIPMENT –

COLOUR MEASUREMENT AND MANAGEMENT –

Part 12-1: Metadata for identification of colour gamut (Gamut ID)

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
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International Standard IEC 61966-12-1 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:
FDIS Report on voting
100/1757/FDIS 100/1776/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

61966-12-1 Ó IEC:2011(E) – 5 –

A list of alll parts of
...

IEC 61966-12-1 ®
Edition 1.0 2011-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Multimedia systems and equipment – Colour measurement and management –
Part 12-1: Metadata for identification of colour gamut (Gamut ID)

Systèmes et appareils multimédia – Mesure et gestion de la couleur –
Partie 12-1: Métadonnées d'identification des gammes de couleurs (Gamut ID)

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by
any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or
IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,
please contact the address below or your local IEC member National Committee for further information.

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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
 Catalogue of IEC publications: www.iec.ch/searchpub
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IEC 61966-12-1 ®
Edition 1.0 2011-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Multimedia systems and equipment – Colour measurement and management –
Part 12-1: Metadata for identification of colour gamut (Gamut ID)

Systèmes et appareils multimédia – Mesure et gestion de la couleur –
Partie 12-1: Métadonnées d'identification des gammes de couleurs (Gamut ID)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX W
ICS 17.180.20; 33.160 ISBN 978-2-88912-826-6

– 2 – 61966-12-1  IEC:2011
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Abbreviations . 8
5 Overview . 8
6 Header of Gamut ID metadata . 9
7 Description of gamut geometry (full profile) . 10
7.1 General . 10
7.2 Gamut geometry . 11
7.3 Header of description of gamut geometry . 12
7.4 Gamut instances . 14
7.5 Gamut hulls . 16
7.6 Gamut component . 17
7.6.1 General . 17
7.6.2 Packing of face indices . 17
7.7 Faces . 18
7.7.1 General . 18
7.7.2 Packing of vertex indices . 19
7.8 Vertices . 19
7.8.1 General . 19
7.8.2 Packing of colour space coordinates for vertices . 20
8 Description of gamut geometry (medium and simple profiles) . 21
8.1 General . 21
8.2 Medium profile. 21
8.3 Simple profile . 21
9 Description of colour reproduction . 22
Annex A (informative) Size of Gamut ID metadata . 25
Annex B (informative) Motivation and requirements . 26
Annex C (informative) Use of profiles . 32
Annex D (informative) Example of Gamut ID metadata in simple profile . 34
Bibliography . 38

Figure 1 – Logical structure of the description of gamut geometry (full profile) . 11
Figure B.1 – Scope of Gamut ID – Generation and use of metadata are not specified . 27
Figure B.2 – Example of a description of gamut geometry in CIEXYZ colour space
consisting of a set of triangular faces . 28
Figure B.3 – Example of a gamut with identified ridge due to colorant channels . 30
Figure B.4 – Example of a non-convex gamut with two convex gamut hulls . 31

Table 1 – Format of Gamut ID metadata . 8
Table 2 – Header of Gamut ID metadata . 9

61966-12-1  IEC:2011 – 3 –
Table 3 – Bit depth for encoding of a colour space coordinate . 10
Table 4 – Description of gamut geometry . 12
Table 5 – Header of description of gamut geometry . 13
Table 6 – Gamut instances . 14
Table 7 – ith Gamut instance . 15
Table 8 – Gamut hulls . 16
Table 9 – hth gamut hull. 16
Table 10 – Definition of gamut components . 17
Table 11 – cth gamut component . 17
Table 12 – Example for packing of gamut components . 18
Table 13 – Definition of faces . 18
Table 14 – Example for packing of faces . 19
Table 15 – Vertices . 20
Table 16 – Packing of 10-bit colour space coordinates . 20
Table 17 – Packing of 12-bit colour space coordinates . 21
Table 18 – Description of gamut geometry (simple profile) . 22
Table 19 – Header of description of gamut geometry (simple profile) . 22
Table 20 – Definition of vertices (simple profile) . 22
Table 21 – Header of description of colour reproduction . 23
Table B.1 – Requirements and Gamut ID features . 29
Table C.1 – Profiles for the description of gamut geometry . 32
Table D.1 – Colour gamut for digital cinema . 34
Table D.2 – Example for the header . 34
Table D.3 – Example for the header of description of gamut geometry . 35
Table D.4 – Example of definition of vertices . 35
Table D.5 – Encoded colour space coordinates for vertices . 36

– 4 – 61966-12-1  IEC:2011
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MULTIMEDIA SYSTEMS AND EQUIPMENT –
COLOUR MEASUREMENT AND MANAGEMENT –

Part 12-1: Metadata for identification of colour gamut (Gamut ID)

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 participa
...