1、 Reference numberISO/IEC 15938-6:2003(E)ISO/IEC 2003Information technology Multimedia content description interface Part 6: Reference software Technologies de linformation Interface de description du contenu multimdia Partie 6: Logiciel de rfrence National Standard of CanadaCAN/CSA-ISO/IEC 15938-6:0
2、4(ISO/IEC 15938-6:2003)International Standard ISO/IEC 15938-6:2003 (first edition, 2003-07-01) has been adopted withoutmodification (IDT) as CSA Standard CAN/CSA-ISO/IEC 15938-6:04, which has been approved as a NationalStandard of Canada by the Standards Council of Canada.ISBN 1-55397-751-3 December
3、 2004The Canadian Standards Association (CSA), under whose auspices this National Standard has been produced, was chartered in 1919 and accredited by the Standards Council of Canada to the National Standards system in 1973. It is a not-for-profit, nonstatutory, voluntary membership association engag
4、ed in standards development and certification activities. CSA standards reflect a national consensus of producers and users including manufacturers, consumers, retailers, unions and professional organizations, and governmental agencies. The standards are used widely by industry and commerce and ofte
5、n adopted by municipal, provincial, and federal governments in their regulations, particularly in the fields of health, safety, building and construction, and the environment. Individuals, companies, and associations across Canada indicate their support for CSAs standards development by volunteering
6、 their time and skills to CSA Committee work and supporting the Associations objectives through sustaining memberships. The more than 7000 committee volunteers and the 2000 sustaining memberships together form CSAs total membership from which its Directors are chosen. Sustaining memberships represen
7、t a major source of income for CSAs standards development activities. The Association offers certification and testing services in support of and as an extension to its standards development activities. To ensure the integrity of its certification process, the Association regularly and continually a
8、udits and inspects products that bear the CSA Mark. In addition to its head office and laboratory complex in Toronto, CSA has regional branch offices in major centres across Canada and inspection and testing agencies in eight countries. Since 1919, the Association has developed the necessary experti
9、se to meet its corporate mission: CSA is an independent service organization whose mission is to provide an open and effective forum for activities facilitating the exchange of goods and services through the use of standards, certification and related services to meet national and international need
10、s.For further information on CSA services, write toCanadian Standards Association5060 Spectrum Way, Suite 100Mississauga, Ontario, L4W 5N6CanadaThe Standards Council of Canada is the coordinating body of the National Standards system, a federation of independent, autonomous organizations working tow
11、ards the further development and improvement of voluntary standardization in the national interest. The principal objects of the Council are to foster and promote voluntary standardization as a means of advancing the national economy, benefiting the health, safety, and welfare of the public, assisti
12、ng and protecting the consumer, facilitating domestic and international trade, and furthering international cooperation in the field of standards. A National Standard of Canada is a standard which has been approved by the Standards Council of Canada and one which reflects a reasonable agreement amon
13、g the views of a number of capable individuals whose collective interests provide to the greatest practicable extent a balance of representation of producers, users, consumers, and others with relevant interests, as may be appropriate to the subject in hand. It normally is a standard which is capabl
14、e of making a significant and timely contribution to the national interest. Approval of a standard as a National Standard of Canada indicates that a standard conforms to the criteria and procedures established by the Standards Council of Canada. Approval does not refer to the technical content of th
15、e standard; this remains the continuing responsibility of the accredited standards development organization. Those who have a need to apply standards are encouraged to use National Standards of Canada whenever practicable. These standards are subject to periodic review; therefore, users are cautione
16、d to obtain the latest edition from the organization preparing the standard.The responsibility for approving National Standards of Canada rests with theStandards Council of Canada270 Albert Street, Suite 200Ottawa, Ontario, K1P 6N7CanadaAlthough the intended primary application of this Standard is s
17、tated in its Scope, it is importantto note that it remains the responsibility of the users to judge its suitability for their particular purpose.Registered trade-mark of Canadian Standards AssociationCAN/CSA-ISO/IEC 15938-6:04Information technology Multimedia contentdescription interface Part 6: Ref
18、erence softwareDecember 2004 Canadian Standards Association CSA/1CAN/CSA-ISO/IEC 15938-6:04Information technology Multimedia content description interface Part 6: Reference softwareCSA PrefaceStandards development within the Information Technology sector is harmonized with international standards de
19、velopment. Through the CSA Technical Committee on Information Technology (TCIT), Canadians serve as the Canadian Advisory Committee (CAC) on ISO/IEC Joint Technical Committee 1 on Information Technology (ISO/IEC JTC1) for the Standards Council of Canada (SCC), the ISO member body for Canada and spon
20、sor of the Canadian National Committee of the IEC. Also, as a member of the International Telecommunication Union (ITU), Canada participates in the International Telegraph and Telephone Consultative Committee (ITU-T).This International Standard was reviewed by the CSA TCIT under the jurisdiction of
21、the Strategic Steering Committee on Information Technology and deemed acceptable for use in Canada. (A committee membership list is available on request from the CSA Project Manager.) From time to time, ISO/IEC may publish addenda, corrigenda, etc. The CSA TCIT will review these documents for approv
22、al and publication. For a listing, refer to the CSA Information Products catalogue or CSA Info Update or contact a CSA Sales representative. This Standard has been formally approved as a National Standard of Canada by the Standards Council of Canada.December 2004 Canadian Standards Association 2004A
23、ll rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission ofthe publisher. ISO/IEC material is reprinted with permission. Where the words “this International Standard” appear in the text, they should be interpreted as “this National Standar
24、d of Canada”.Inquiries regarding this National Standard of Canada should be addressed toCanadian Standards Association5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N61-800-463-6727 416-747-4044www.csa.caReference numberISO/IEC 15938-6:2003(E)ISO/IEC 2003INTERNATIONAL STANDARD ISO/I
25、EC15938-6First edition2003-07-01Information technology Multimedia content description interface Part 6: Reference software Technologies de linformation Interface de description du contenu multimdia Partie 6: Logiciel de rfrence ISO/IEC 15938-6:2003(E) PDF disclaimer This PDF file may contain embedde
26、d typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not
27、 infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters wer
28、e optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO/IEC 2003 All rights reserved. Unless otherwise spe
29、cified, 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 ISO at the address below or ISOs member body in the country of the requester. ISO copyright office
30、Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org ii ISO/IEC 2003 All rights reservedISO/IEC 15938-6:2003(E) ISO/IEC 2003 All rights reserved iiiContents Page Foreword iv Introduction v 1 Scope 1 2 Symbols and abbreviated terms 1 3
31、 Copyright disclaimer for software modules.2 4 XM software architecture . 2 4.1 Block diagrams . 2 5 Systems reference software (BiM) 12 5.1 BiM reference software. 12 5.2 Access unit navigator. 14 6 Systems reference software (DDL) . 16 7 Video reference software . 16 8 Audio reference software. 17
32、 9 Multimedia description scheme reference software . 18 10 Compilation of the reference software . 20 11 Usage information for individual descriptors and description schemes 20 Annex A (informative) Providers of reference software . 21 Annex B (informative) Integration and interface templates . 22
33、Annex C (informative) Patent statements 23 ISO/IEC 15938-6:2003(E) iv ISO/IEC 2003 All rights reservedForeword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies t
34、hat are members of ISO or IEC participate in the development of International Standards through technical committees established by the respective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other inter
35、national organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. International Standards are drafted in accordance with the rules given
36、in the ISO/IEC Directives, Part 2. The main task of the joint technical committee is to prepare International Standards. Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires approval by
37、at least 75 % of the national bodies casting a vote. ISO/IEC 15938-6 was prepared by Technical Committee ISO/IEC/TC JTC1, Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia information. ISO/IEC 15938 consists of the following parts, under the general titl
38、e Information technology Multimedia content description interface: Part 1: Systems Part 2: Description definition language Part 3: Visual Part 4: Audio Part 5: Multimedia description schemes Part 6: Reference software Part 7: Conformance testing Part 8: Extraction and use of MPEG-7 descriptions ISO/
39、IEC 15938-6:2003(E) ISO/IEC 2003 All rights reserved vIntroduction This International Standard, also known as “Multimedia Content Description Interface”, provides a standardized set of technologies for describing multimedia content. International Standard addresses a broad spectrum of multimedia app
40、lications and requirements by providing a metadata system for describing the features of multimedia content. The following are specified in this International Standard: Description schemes (DS) describe entities or relationships pertaining to multimedia content. Description Schemes specify the struc
41、ture and semantics of their components, which may be Description Schemes, Descriptors, or datatypes. Descriptors (D) describe features, attributes, or groups of attributes of multimedia content. Datatypes are the basic reusable datatypes employed by Description Schemes and Descriptors. Systems tools
42、 support delivery of descriptions, multiplexing of descriptions with multimedia content, synchronization, file format, and so forth. This International Standard is subdivided into eight parts: Part 1 Systems: specifies the tools for preparing descriptions for efficient transport and storage, compres
43、sing descriptions, and allowing synchronization between content and descriptions. Part 2 Description definition language: specifies the language for defining the standard set of description tools (DSs, Ds, and datatypes) and for defining new description tools. Part 3 Visual: specifies the descriptio
44、n tools pertaining to visual content. Part 4 Audio: specifies the description tools pertaining to audio content. Part 5 Multimedia description schemes: specifies the generic description tools pertaining to multimedia including audio and visual content. Part 6 Reference software: provides a software
45、implementation of the standard. Part 7 Conformance testing: specifies the guidelines and procedures for testing conformance of implementations of the standard. Part 8 Extraction and use of MPEG-7 descriptions: provides guidelines and examples of the extraction and use of descriptions. This part of I
46、SO/IEC 15938 contains simulation software for tools defined in parts 1, 2, 3, 4 and 5 of ISO/IEC 15938. This software has been derived from the verification models used in the process of developing the International Standard. Where multimedia content extraction or multimedia content description soft
47、ware is provided, attention is called to the fact that these software modules are provided for the purpose of creating bit streams of descriptors and description schemes with normative syntax. The performance of these software tools should not be taken as indicative of that which can be obtained fro
48、m implementations where quality and computational optimization are given priority. The techniques used for extracting descriptors or deriving description schemes are not specified by this document. This information can be found in the corresponding sections of part 1-5. INTERNATIONAL STANDARD ISO/IE
49、C 15938-6:2003(E) ISO/IEC 2003 All rights reserved 1Information technology Multimedia content description interface Part 6: Reference software 1 Scope This International Standard operates on and generates conformant bit streams. This International Standard provides a specific implementation that behaves in a conformant manner. In general, other implementations that conform to ISO/IEC 15938 are possible that do not necessarily use the algorithms or the programming techniques
