ISO/IEC 15938-6:2020
(Main)Information technology — Multimedia content description interface — Part 6: Reference software
Information technology — Multimedia content description interface — Part 6: Reference software
The ISO/IEC 15938 series operates on and generates conformant bitstreams. This document provides a specific implementation that behaves in a conformant manner. NOTE 1 Other implementations that conform to the ISO/IEC 15938 series are possible, which do not necessarily use the algorithms or the programming techniques of the reference software. The software contained in this document is known as eXperimentation Model (XM) and is divided into five categories: a) Binary format for MPEG-7 (BiM). This software converts DDL (XML) based descriptions to binary format and vice versa as explained in Clause 5. b) DDL parser and DDL validation parser. The components of this software module are specified in Clause 6. c) Visual descriptors. This software creates standard visual descriptions from associated (visual) media content as explained in Clause 7. NOTE 2 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 descriptions from associated (audio) media content as explained in Clause 8. NOTE 3 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 standard descriptions of multimedia description schemes as specified in Clause 9.
Technologies de l'information — Interface de description du contenu multimédia — Partie 6: Logiciel de référence
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DRAFT INTERNATIONAL STANDARD
ISO/IEC DIS 15938-6
ISO/IEC JTC 1/SC 29 Secretariat: JISC
Voting begins on: Voting terminates on:
2015-10-29 2016-01-29
Information technology — Multimedia content
description interface —
Part 6:
Reference software
Technologies de l’information — Interface de description du contenu multimédia —
Partie 6: Logiciel de référence
ICS: 35.040
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/IEC DIS 15938-6:2015(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
©
PROVIDE SUPPORTING DOCUMENTATION. ISO/IEC 2015
ISO/IEC DIS 15938-6:2015(E)
© ISO/IEC 2015, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO/IEC 2015 – All rights reserved
ISO/IEC DIS 15938-6
Contents 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
4.1.1 Media database . 4
4.1.2 AV decoders . 4
4.1.3 Media data . 5
4.1.4 Extraction tools . 5
4.1.5 Descriptors (Ds) and description schemes (DSs) . 6
4.1.6 Coding schemes (CSs) . 8
4.1.7 Search & matching tools . 9
4.1.8 Media transcoders . 11
4.1.9 Applications . 11
4.1.10 Interface structure . 12
5 Systems reference software (BiM) . 12
5.1 BiM reference software . 12
5.1.1 Introduction . 12
5.1.2 Software overview . 13
5.2 Access unit navigator . 14
5.2.1 Introduction . 14
5.2.2 Textual access unit encoder module . 14
5.2.3 Textual access unit decoder module . 15
6 Systems reference software (DDL) . 16
7 Video reference software . 16
8 Audio reference software . 17
9 Multimedia description scheme reference software . 19
10 Compilation of the reference software . 21
11 Usage information for individual descriptors and description schemes . 21
Annex A (informative) Providers of reference software . 22
Annex B (informative) Patent statements . 24
© ISO/IEC 2015 – All rights reserved iii
ISO/IEC DIS 15938-6
Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that 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 international 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 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 at least 75 % of the national bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.
ISO/IEC 15938-6 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology,
Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia information.
This second edition cancels and replaces the first edition of which has been technically revised.
ISO/IEC 15938 consists of the following parts, under the general title 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
⎯ Part 9: Profiles and levels
⎯ Part 10: Schema definition
⎯ Part 11: MPEG-7 profile schemas
⎯ Part 12: Query format
⎯ Part 13: Compact descriptors for visual search
iv © ISO/IEC 2015 – All rights reserved
ISO/IEC DIS 15938-6
Introduction
This International Standard, also known as "Multimedia Content Description Interface," provides a
standardized set of technologies for describing multimedia content. It addresses a broad spectrum of
multimedia applications 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 structure 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 support delivery of descriptions, multiplexing of descriptions with multimedia content,
synchronization, file format, and so forth.
This International Standard is subdivided into 13 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 language for defining the International 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 description schemes: specifies the generic description tools pertaining to multimedia
including audio and visual content.
Part 6 – Reference software: provides a software implementation of the International Standard.
Part 7 – Conformance testing: specifies the guidelines and procedures for testing conformance of
implementations of the International Standard.
Part 8 – Extraction and use of MPEG-7 descriptions: provides guidelines and examples of the extraction
and use of descriptions.
Part 9 – Profiles and levels: provides guidelines and standard profiles.
Part 10 – Schema definition: specifies the schema using description definition language.
Part 11 – Profile Schemas: listing of profile schemas using description definition language.
Part 12 – Query format: contains the tools of the MPEG Query Format (MPQF)
Part 13 – Compact descriptors for visual search: specifies an image description tool for visual search
applications
© ISO/IEC 2015 – All rights reserved v
ISO/IEC DIS 15938-6
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 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 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 from 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.
vi © ISO/IEC 2015 – All rights reserved
DRAFT INTERNATIONAL STANDARD ISO/IEC DIS 15938-6
Information technology — Multimedia content description
interface — Part 6: Reference software
1 Scope
This International Standard operates on and generates conformant bitstreams. 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 of the reference software.
The software contained in this part of ISO/IEC 15938 is known as eXperimentation Model (XM) and is divided
into five categories:
a) Binary format for MPEG-7 (BiM). This software converts DDL (XML) based descriptions to binary format
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 visual 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 descriptions 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 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: Discrete Cosine Transform
DDL: Description
...
INTERNATIONAL ISO/IEC
STANDARD 15938-6
Second edition
2020-06
Information technology — Multimedia
content description interface —
Part 6:
Reference software
Technologies de l'information — Interface de description du contenu
multimédia —
Partie 6: Logiciel de référence
Reference number
©
ISO/IEC 2020
© ISO/IEC 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO/IEC 2020 – All rights reserved
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 2
5 Copyright disclaimer for software modules . 2
6 XM software architecture . 2
6.1 Block diagrams . 2
6.2 Block descriptions . 4
6.2.1 General. 4
6.2.2 Media database . 4
6.2.3 AV decoders . 4
6.2.4 Media data . 5
6.2.5 Extraction tools . 5
6.2.6 Descriptors (Ds) and description schemes (DSs) . 6
6.2.7 Coding schemes (CSs) . . 7
6.2.8 Search and matching tools. 8
6.2.9 Media transcoders .10
6.2.10 Applications .10
6.2.11 Interface structure.10
7 Systems reference software (BiM) .11
7.1 General .11
7.2 BiM reference software .11
7.2.1 General.11
7.2.2 Package content .11
7.2.3 Installation and execution .11
7.2.4 Software overview .12
7.2.5 Main packages .12
7.3 Access unit navigator .12
7.3.1 General.12
7.3.2 Textual access unit encoder module .13
7.3.3 Textual access unit decoder module .13
8 Description definition language (DDL) reference software .14
9 Video reference software .14
10 Audio reference software .15
11 Multimedia description scheme reference software .17
12 Compilation of the reference software .18
13 Usage information for individual descriptors and description schemes .18
© ISO/IEC 2020 – All rights reserved iii
Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that
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
international organizations, governmental and non-governmental, in liaison with ISO and IEC, also
take part in the work.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for
the different types of document should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject
of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent
rights. Details of any patent rights identified during the development of the document will be in the
Introduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents) or the IEC
list of patent declarations received (see http:// patents .iec .ch).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso .org/
iso/ foreword .html.
This document was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology,
Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia information.
This second edition cancels and replaces the first edition (ISO/IEC 15938-6:2003), which
has been technically revised. It also incorporates the Amendments ISO/IEC 15938-6:2003/
Amd.1:2006, ISO/IEC 15938-6:2003/Amd.1:2006/Cor.1:2007, ISO/IEC 15938-6:2003/Amd.2:2007,
ISO/IEC 15938-6:2003/Amd.3:2010 and ISO/IEC 15938-6:2003/Amd.4:2011. The main changes
compared to the previous edition are as follows:
— all previous Amendments have been incorporated and the electronic attachments have been
updated;
— minor editorial corrections have been made throughout the document to fully align with ISO/IEC
Directives.
A list of all parts in the ISO/IEC 15938 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO/IEC 2020 – All rights reserved
Introduction
This document provides a standardized set of technologies for describing multimedia content. It
addresses a broad spectrum of multimedia applications and requirements by providing a metadata
system for describing the features of multimedia content.
The software is available at: https:// standards .iso .org/ iso -iec/ 15938/ -6/ ed -2/ en.
The following are specified in this document:
Description schemes (DS) describe entities or relationships pertaining to multimedia content.
Description schemes specify the structure and semantics of their components, which can 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 support delivery of descriptions, multiplexing of descriptions with multimedia content,
synchronization, file format, and so forth.
This document contains simulation software for tools defined in ISO/IEC 15938-1, ISO/IEC 15938-2,
ISO/IEC 15938-3, ISO/IEC 15938-4 and ISO/IEC 15938-5. This software has been derived from the
verification models used in the process of developing this series.
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 bitstreams of
descriptors and description schemes with normative syntax. The performance of these software tools
is not indicative of that which can be obtained from 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 Part of
the ISO/IEC 15938 series.
The International Organization for Standardization (ISO) and International Electrotechnical
Commission (IEC) draw attention to the fact that it is claimed that compliance with this document may
involve the use of patents.
ISO and IEC take no position concerning the evidence, validity and scope of these patent rights.
The holders of these patent rights have assured ISO and IEC that they are willing to negotiate licences
under reasonable and non-discriminatory terms and conditions with applicants throughout the world.
In this respect, the statements of the holders of these patent rights are registered with ISO and IEC.
Information may be obtained from the patent database available at www .iso .org/ patents.
Attention is drawn to the possibility that some of the elements of this document may be the subject
of patent rights other than those in the patent database. ISO and IEC shall not be held responsible for
identifying any or all such patent rights.
© ISO/IEC 2020 – All rights reserved v
INTERNATIONAL STANDARD ISO/IEC 15938-6:2020(E)
Information technology — Multimedia content description
interface —
Part 6:
Reference software
1 Scope
The ISO/IEC 15938 series operates on and generates conformant bitstreams. This document provides a
specific implem
...
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