1、raising standards worldwide NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BSI Standards Publication Multimedia systems and equipment Colour measurement and management Part 12-1: Metadata for identification of colour gamut (Gamut ID) BS EN 61966-12-1:2011National foreword Thi
2、s British Standard is the UK implementation of EN 61966-12-1:2011. It is identical to IEC 61966-12-1:2011. The UK participation in its preparation was entrusted to Technical Committee EPL/100, Audio, video and multimedia systems and equipment. A list of organizations represented on this committee ca
3、n be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. BSI 2011 ISBN 978 0 580 74878 3 ICS 17.180.20; 33.160.60 Compliance with a British Standard cannot confer immunity fr
4、om legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2011. Amendments issued since publication Amd. No. Date Text affected BRITISH STANDARD BS EN 61966-12-1:2011 EUROPEAN STANDARD EN 61966-12-1 NORME EUROPENNE EUROPIS
5、CHE NORM March 2011 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2011 CENELEC - All rights of exploitation in any form and by any
6、 means reserved worldwide for CENELEC members. Ref. No. EN 61966-12-1:2011 E ICS 17.180.20; 33.160 English version Multimedia systems and equipment - Colour measurement and management - Part 12-1: Metadata for identification of colour gamut (Gamut ID) (IEC 61966-12-1:2011) Systmes et appareils multi
7、mdia - Mesure et gestion de la couleur - Partie 12-1: Mtadonnes didentification de gamme de couleurs (Gamut ID) (CEI 61966-12-1:2011) Multimediasysteme und -gerte - Farbmessung und Farbmanagement - Teil 12-1: Metadaten fr die Kennzeichnung des Farbumfangs (Gamut-ID) (IEC 61966-12-1:2011) This Europe
8、an Standard was approved by CENELEC on 2011-02-16. 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
9、concerning such national standards may be obtained on application to the Central Secretariat 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
10、into its own language and notified to the Central Secretariat 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, France, Germany, Greece, Hungary, Ic
11、eland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 61966-12-1:2011EN 61966-12-1:2011 Foreword The text of document 100/1757/FDIS, future edition 1 of IEC 61966-1
12、2-1, prepared by technical area 2, Colour measurement and management, of IEC TC 100, Audio, video and multimedia systems and equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61966-12-1 on 2011-02-16. Attention is drawn to the possibility that some of the el
13、ements of this document may be the subject of patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent rights. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standa
14、rd or by endorsement (dop) 2011-11-16 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2014-02-16 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61966-12-1:2011 was approved by CENELEC as a European St
15、andard without any modification. _ BS EN 61966-12-1:2011EN 61966-12-1:2011 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following referenced documents are indispensable for the application of this document. For dated refer
16、ences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN
17、/HD Year IEC 60050-845 1987 International Electrotechnical Vocabulary (IEV) - Chapter 845: Lighting - - IEC 61966-2-4 2006 Multimedia systems and equipment - Colour measurement and management - Part 2-4: Colour management - Extended- gamut YCC colour space for video applications - xvYCC EN 61966-2-4
18、 2006 ISO 15076-1 2005 Image technology colour management - Architecture, profile format and data structure - Part 1: Based on ICC.1:2004-10 - - ISO 22028-1 2004 Photography and graphic technology - Extended colour encodings for digital image storage, manipulation and interchange - Part 1: Architect
19、ure and requirements - - ITU-R BT.709-5 2002 Parameter values for the HDTV standards for production and international programme exchange - - CIE 15 2004 Colorimetry - - SMPTE 274M 2005 SMPTE Standard for Television - 1920 x 1080 Image Sample Structure, Digital Representation and Digital Timing Refer
20、ence Sequences for Multiple Picture Rates - - BS EN 61966-12-1:20116 1 9 6 6 - 1 2 - 1 IEC:2011(E) C O N T E N T S I N T R O D U C T I O N . 6 1 S c o p e . 7 2 N o r m a t i ve r e fe r e n c e s . . 7 3 T e r m s a n d d e f i n i t i o n s . . 8 4 A b b r e v i a t i o n s . 8 5 Ove r view . 8 6
21、H e a d e r o f G a m u t I D m e t a d a t a . . 9 7 D e s c r i p t i o n o f g a m u t g e o m e t r y ( f u l l p r o f i l e ) . 1 0 7 . 1 G e n e r a l . 1 0 7 . 2 G a m u t g e o m e t r y . 1 1 7 . 3 H e a d e r o f d e s c r i p t i o n o f g a m u t g e o me t r y . 1 2 7 . 4 G a m u t i n
22、 s t a n c e s . 1 4 7 . 5 G a m u t h u l l s . . 1 6 7 . 6 G a m u t c o m p o n e n t . 1 7 7 . 6 . 1 G e n e r a l . . 1 7 7 . 6 . 2 P a c k i n g o f f a c e i n d i c e s . 1 7 7 . 7 F a c e s . 1 8 7 . 7 . 1 G e n e r a l . . 1 8 7 . 7 . 2 P a c k i n g o f v e r t e x i n d i c e s . . 1 9 7
23、 . 8 V e r t i c e s . . 1 9 7 . 8 . 1 G e n e r a l . . 1 9 7 . 8 . 2 P a c k i n g o f c o l o u r s p a c e c o o r d i n a t e s f o r v e r t i c e s . . 2 0 8 D e s c r i p t i o n o f g a m u t g e o m e t r y ( me d i u m a n d s i m p l e p r o f i l e s ) . 2 1 8 . 1 G e n e r a l . 2 1 8
24、. 2 M e d i u m p r o f i l e . 2 1 8 . 3 Simple profile 2 1 9 D e s c r i p t i o n o f c o l o u r r e p r o d u c t i o n . . 2 2 A n n e x A ( i n f o r m a t i v e ) S i z e o f G a m u t I D m e t a d a t a . . 2 5 A n n e x B ( i n f o r m a t i v e ) M o t i v a t i o n a n d r e q u i r e m
25、 e n t s . 2 6 A n n e x C ( i n f o r m a t i v e ) U s e o f p r o f i l e s . . 3 2 A n n e x D ( i n f o r m a t i v e ) E x a m p l e o f G a m u t I D m e t a d a t a i n s i m p l e p r o f i l e . . 3 4 Bibliography . 3 8 Figu re 1 Log ica l stru c ture of the des c rip tion o f g a mu t geo
26、 me try (fu ll pro file ) . 1 1 Figu re B .1 S cope o f Ga mut ID Gene ra tion and us e of me tada ta a re no t s pe c ified . 2 7 Figure B.2 Example of a description of gamut geometry in CIEXYZ colour space c o n s i s t i n g o f a s e t o f t r i a n g u l a r f a c e s . 2 8 Figu re B .3 E xa mp
27、 le o f a ga mut with id entifie d r id ge du e to co lor ant chann e ls . 3 0 Figu re B .4 E xa mp le o f a non-con ve x ga mu t w ith tw o con ve x ga mu t hu lls. 3 1 T a b l e 1 F o r m a t o f G a m u t I D m e t a d a t a . 8 T a b l e 2 H e a d e r o f G a m u t I D m e t a d a t a . 9 T a b
28、l e 3 B i t d e p t h f o r e n c o d i n g o f a c o l o u r s p a c e c o o r d i n a t e . 1 0 BS EN 61966-12-1:20116 1 9 6 6 - 1 2 - 1 IEC:2011(E) T a b l e 4 D e s c r i p t i o n o f g a m u t g e o m e t r y . 1 2 T a b l e 5 H e a d e r o f d e s c r i p t i o n o f g a m u t g e o m e t r y
29、 . . 1 3 T a b l e 6 G a m u t i n s t a n c e s . 1 4 T a b l e 7 it h G a m u t i n s t a n c e . . 1 5 T a b l e 8 G a m u t h u l l s . . 1 6 T a b l e 9 h t h g a m u t h u l l . . 1 6 T a b l e 1 0 D e f i n i t i o n o f g a m u t c o m p o n e n t s . . 1 7 T a b l e 1 1 ct h g a m u t c o m
30、 p o n e n t . . 1 7 T a b l e 1 2 E x a m p l e f o r p a c k i n g o f g a m u t c o m p o n e n t s . 1 8 T a b l e 1 3 D e f i n i t i o n o f f a c e s . 1 8 T a b l e 1 4 E x a m p l e f o r p a c k i n g o f f a c e s . 1 9 T a b l e 1 5 V e r t i c e s . 2 0 T a b l e 1 6 P a c k i n g o f 1
31、 0 - b i t c o l o u r s p a c e c o o r d i n a t e s . 2 0 T a b l e 1 7 P a c k i n g o f 1 2 - b i t c o l o u r s p a c e c o o r d i n a t e s . 2 1 T a b l e 1 8 D e s c r i p t i o n o f g a m u t g e o m e t r y ( s i m p l e p r o f i l e ) . 2 2 T a b l e 1 9 H e a d e r o f d e s c r i p
32、 t i o n o f g a m u t g e o m e t r y ( s i m p l e p r o f i l e ) . 2 2 T a b l e 2 0 D e f i n i t i o n o f v e r t i c e s ( s i m p l e p r o f i l e ) . . 2 2 T a b l e B . 1 R e q u i r e m e n t s a n d G a m u t I D f e a t u r e s . . 2 9 T a b l e C . 1 P r o f i l e s f o r t h e d e s
33、 c r i p t i o n o f g a m u t g e o m e t r y . . 3 2 T a b l e D . 1 C o l o u r g a m u t f o r d i g i t a l c i n e m a . 3 4 T a b l e D . 2 E x a m p l e f o r t h e h e a d e r . . 3 4 T a b l e D . 3 E x a m p l e f o r t h e h e a d e r o f d e s c r i p t i o n o f g a m u t g e o m e t r
34、 y . . 3 5 T a b l e D . 4 E x a m p l e o f d e f i n i t i o n o f v e r t i c e s . 3 5 BS EN 61966-12-1:2011 6 61966-12-1 IEC:2011(E) INTRODUCTION New technologies in capturing and displaying wide-gamut colour images enable a new market of wide-gamut video colour content creation. Recent video s
35、tandards for wide gamut colour space encoding such as IEC 61966-2-4 (xvYCC) were established 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 colorimetry standards ITU-R BT.601 (standard definition television) a
36、nd ITU-R BT.709 (high definition television). With the increasing popularity of wide gamut and high dynamic range content and displays, the variety of colour gamuts of displays is expected to increase. This issue can be an obstacle for adopting wide-gamut video colour content in professional content
37、 creation since the compatibility of the content 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 of technology, t
38、he variety of colour gamut 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, the IEC standard Gamut ID (IEC 61966-12-1) specifies a colour gamut metadata scheme f
39、or video systems including information for colour reproduction. This metadata can amend a video content or a display. 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 th
40、e display is done with the knowledge of the colour gamut of the pictorial content. This standard enables video systems defining their own colour gamut. This standard defines necessary metadata that allows managing inhomogeneous video systems with different colour gamuts. This standard generalizes ex
41、isting colour space encoding standards having a fixed colour gamut. BS EN 61966-12-1:201161966-12-1 IEC:2011(E) 7 MULTIMEDIA SYSTEMS AND EQUIPMENT COLOUR MEASUREMENT AND MANAGEMENT Part 12-1: Metadata for identification of colour gamut (Gamut ID) 1 Scope This part of IEC 61966 defines the colour gam
42、ut 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. When associated with content, the colour gamut metadata defines the gamut for which the content was created. It can be
43、 used by the display for controlled colour reproduction even if the displays colour gamut is different from that of the content. When associated with a display, the colour gamut metadata defines the display colour gamut. It can be used during content creation to enable improved colour reproduction.
44、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. The colour gamut metadata scheme provides scalable solutions. For exam
45、ple, more flexible solutions will be used for the professional use, while much simpler solutions will be used for consumer use with easier product implementation. This part of IEC 61966 only defines the colour gamut metadata scheme. Vendor-specific solutions for creation and end-use of this metadata
46、 are allowed. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60050(84
47、5):1987, International electrochnical vocabulary Chapter 845: Lighting IEC 61966-2-4:2006, Multimedia systems and equipment Colour measurement and management Part 2-4: Colour management Extended-gamut YCC colour space for video applications xvYCC ISO 15076-1:2005 Image technology colour management A
48、rchitecture, profile format and data structure Part 1: Based on ICC.1:2004-10 ISO 22028-1:2004, Photography and graphic technology Extended colour encodings for digital image storage, manipulation and interchange Part 1: Architecture and requirements ITU-R BT.709-5:2002, Parameter values for the HDT
49、V standards for production and international programme exchange BS EN 61966-12-1:2011 8 61966-12-1 IEC:2011(E) CIE 15:2004, Colorimetry SMPTE 274M:2005, SMPTE Standard for Television - 1920 x 1080 Image Sample Structure, Digital Representation and Digital Timing Reference Sequences for Multiple Picture Rates 3 Terms and definitions For the purposes of this document, the following terms and definitions as well as the terms and definitio
