1、Adopted by INCITS (InterNational Committee for Information Technology Standards) as an American National Standard.Date of ANSI Approval: 12/24/2003Published by American National Standards Institute,25 West 43rd Street, New York, New York 10036Copyright 2003 by Information Technology Industry Council
2、 (ITI).All rights reserved.These materials are subject to copyright claims of International Standardization Organization (ISO), InternationalElectrotechnical Commission (IEC), American National Standards Institute (ANSI), and Information Technology Industry Council(ITI). Not for resale. No part of t
3、his publication may be reproduced in any form, including an electronic retrieval system, withoutthe prior written permission of ITI. All requests pertaining to this standard should be submitted to ITI, 1250 Eye Street NW,Washington, DC 20005.Printed in the United States of AmericaReference numberISO
4、/IEC 15938-6:2003(E)ISO/IEC 2003INTERNATIONAL STANDARD ISO/IEC15938-6First 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 Copyright Am
5、erican National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO/IEC 15938-6:2003(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may
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10、49 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO/IEC 2003 All rights reservedCopyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO/IEC 15938-6:2003(
11、E) ISO/IEC 2003 All rights reserved iiiContents Page Foreword iv Introduction v 1 Scope 1 2 Symbols and abbreviated terms 1 3 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 Acc
12、ess unit navigator. 14 6 Systems reference software (DDL) . 16 7 Video reference software . 16 8 Audio reference software. 17 9 Multimedia description scheme reference software . 18 10 Compilation of the reference software . 20 11 Usage information for individual descriptors and description schemes
13、20 Annex A (informative) Providers of reference software . 21 Annex B (informative) Integration and interface templates . 22 Annex C (informative) Patent statements 23 Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking p
14、ermitted without license from IHS-,-,-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 that a
15、re 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 internatio
16、nal 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 in th
17、e 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 at le
18、ast 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 title Inf
19、ormation 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 Copyright
20、 American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO/IEC 15938-6:2003(E) ISO/IEC 2003 All rights reserved vIntroduction This International Standard, also known as “Multimedia Content Descr
21、iption Interface”, provides a standardized set of technologies for describing multimedia content. International Standard addresses a broad spectrum of multimedia applications and requirements by providing a metadata system for describing the features of multimedia content. The following are specifie
22、d in this International Standard: Description schemes (DS) describe entities or relationships pertaining to multimedia content. Description Schemes specify the structure and semantics of their components, which may be Description Schemes, Descriptors, or datatypes. Descriptors (D) describe features,
23、 attributes, or groups of attributes of multimedia content. Datatypes are the basic reusable datatypes employed by Description Schemes and Descriptors. Systems tools support delivery of descriptions, multiplexing of descriptions with multimedia content, synchronization, file format, and so forth. Th
24、is International Standard is subdivided into eight parts: Part 1 Systems: specifies the tools for preparing descriptions for efficient transport and storage, compressing descriptions, and allowing synchronization between content and descriptions. Part 2 Description definition language: specifies the
25、 language for defining the standard set of description tools (DSs, Ds, and datatypes) and for defining new description tools. Part 3 Visual: specifies the description tools pertaining to visual content. Part 4 Audio: specifies the description tools pertaining to audio content. Part 5 Multimedia desc
26、ription schemes: specifies the generic description tools pertaining to multimedia including audio and visual content. Part 6 Reference software: provides a software implementation of the standard. Part 7 Conformance testing: specifies the guidelines and procedures for testing conformance of implemen
27、tations 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 ISO/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
28、from the verification models used in the process of developing the International Standard. Where multimedia content extraction or multimedia content description software is provided, attention is called to the fact that these software modules are provided for the purpose of creating bit streams of d
29、escriptors and description schemes with normative syntax. The performance of these software tools should not be taken as indicative of that which can be obtained from implementations where quality and computational optimization are given priority. The techniques used for extracting descriptors or de
30、riving description schemes are not specified by this document. This information can be found in the corresponding sections of part 1-5. Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IH
31、S-,-,-Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-INTERNATIONAL STANDARD ISO/IEC 15938-6:2003(E) ISO/IEC 2003 All rights reserved 1Information technology Multimedia content d
32、escription 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 ar
33、e possible that do not necessarily use the algorithms or the programming techniques of the reference software. The software contained in this part of ISO/IEC 15938 is known as experimentation software (XM) and is divided into five categories: a) Binary format for MPEG-7 (BiM). This software converts
34、 DDL (XML) based descriptions to the Binary format of MPEG-7 and vice versa as explained in Clause 5 of this document. b) DDL parser and DDL validation parser. The components of this software module are specified in Clause 6 of this document. c) Visual descriptors. This software creates standard vis
35、ual descriptions from associated (visual) media content as explained in Clause 7 of this document. The techniques used for extracting descriptors are informative, and the quality and complexity of these extraction tools has not been optimized. d) Audio descriptors. This software creates standard des
36、criptions from associated (audio) media content as explained in Clause 8 of this document. The techniques used for extracting descriptors are informative, and the quality and complexity of these extraction tools has not been optimized. e) Multimedia description schemes. This software modules provide
37、 standard descriptions of Multimedia Description Schemes as specified in Clause 9 of this document. 2 Symbols and abbreviated terms For the purposes of this part of ISO/IEC 15938, the following symbols and abbreviated terms apply: AV: Audio-visual CS: Coding Scheme D: Descriptor Ds: Descriptors DCT:
38、 Discrete Cosine Transform DDL: Description Definition Language Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO/IEC 15938-6:2003(E) 2 ISO/IEC 2003 All rights reservedDS: Desc
39、ription Scheme DSs: Description Schemes ISO: International Organization for Standardization MDS: Multimedia Description Schemes MPEG: Moving Picture Experts Group MPEG-7: Multimedia Content Description Interface Standard (see ISO/IEC 15938) XML: Extensible Markup Language 3 Copyright disclaimer for
40、software modules Each source code module in this specification contains copyright disclaimer which shall not be removed from the source code module. In the text of each copyright disclaimer, is replaced with a reference to its associated specification, e.g. MPEG-7 System (ISO/IEC 15938-1), MPEG-7 Vi
41、deo (ISO/IEC 15938-3), MPEG-7 Audio (ISO/IEC 15938-4), MPEG-7 Multimedia Description Scheme (ISO/IEC 15938-5). “This software module was originally developed by () and edited by (), (), in the course of development of the . This software module is an implementation of a part of one or more tools as
42、specified by the . ISO/IEC gives users of the free license to this software module or modifications thereof for use in hardware or software products claiming conformance to the . Those intending to use this software module in hardware or software products are advised that its use may infringe existi
43、ng patents. The original developer of this software module and his/her company, the subsequent editors and their companies, and ISO/IEC have no liability for use of this software module or modifications thereof in an implementation. Copyright is not released for non conforming products. CN1 retains
44、full right to use the code for his/her own purpose, assign or donate the code to a third party and to inhibit third parties from using the code for non conforming products. This copyright notice must be included in all copies or derivative works. Copyright 200_”. =First Name, =Last Name, =Company Na
45、me 4 XM software architecture 4.1 Block diagrams In this section you will find some information about the XM software architecture. The block diagrams give short overviews, and introduce individual components of the XM software. The section also provides a list of the directory location for each mod
46、ule. The composing elements of the MPEG-7 Reference Software are characterized by their functionality and by their interfaces. They can be configured according to what here is referred as “Key Applications”. We can distinguish from the functional point of view: “Extraction Applications” (a descripti
47、on data base is built from a media data base) “Search and Retrieval Applications” (a description is compared with the descriptions in a database to find the one with the lowest distance) “Transcoding Applications” (a media data base is converted into another media data base basing on its description
48、) Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO/IEC 15938-6:2003(E) ISO/IEC 2003 All rights reserved 3Extraction ApplicationMediaDatabaseMediaDataDescriptionDatabaseDescrip
49、tor/DescriptionschemesCodingSchemeAV DecoderExtractionToolMPEG-7 Reference Software MPEG-7 normative PartNOTE In the block diagram, boxes represent procedural parts, circles represent data structures. Figure 1 Schematic diagram of an “Extraction Application” using the XM reference software modules Search public: / Null
