ISO/IEC 15938-7:2003/Amd 5:2010

Information technology — Multimedia content description interface — Part 7: Conformance testing — Amendment 5: Conformance testing for image signature tools

Technologies de l'information — Description de l'interface du contenu multimédia — Partie 7: Essais de conformité — Amendement 5: Essai de conformité pour outils de signature d'image

General Information

• Status: Published
• Publication Date: 26-Jul-2010
• ICS: 35.040 - Information coding
• ICS: 35.040.40 - Coding of audio, video, multimedia and hypermedia information
• Technical Committee: ISO/IEC JTC 1/SC 29 - Coding of audio, picture, multimedia and hypermedia information
• Drafting Committee: ISO/IEC JTC 1/SC 29 - Coding of audio, picture, multimedia and hypermedia information
• Current Stage: 6060 - International Standard published
• Start Date: 27-Jul-2010
• Due Date: 13-Jan-2012
• Completion Date: 13-Jan-2012

Relations

• Amends: ISO/IEC 15938-7:2003 - Information technology — Multimedia content description interface — Part 7: Conformance testing
• Effective Date: 31-Jul-2021

Overview

ISO/IEC 15938-7:2003/Amd 5:2010 is an amendment to the international standard for multimedia content description interfaces, specifically focusing on conformance testing for image signature tools. Part of the MPEG-7 standard series, this amendment enhances the testing framework by defining rigorous conformance criteria for image signature extractors. It ensures that implementations of image signature extraction methods meet the required specifications, improving reliability and interoperability across multimedia applications.

This standard is published by ISO and IEC under their joint technical committee ISO/IEC JTC 1, Subcommittee SC 29, which specializes in coding of audio, picture, multimedia, and hypermedia information. The amendment supports global harmonization of multimedia technology by providing a structured approach to verifying image signature extraction tools.

Key Topics

• Conformance Testing for Image Signature Tools
  This amendment introduces specific conformance testing procedures for image signature extractors. These tools generate descriptors that summarize key visual features of images, enabling efficient search, retrieval, and analysis.

• Global and Local Image Signature Components
  The testing framework distinguishes between global signature components (512-bit segments named GlobalSignatureA and GlobalSignatureB) and local signature components (smaller 60-bit signatures associated with spatial coordinates within the image). Both sets must closely match reference signatures within defined error thresholds for conformance.

• Test Image Dataset
  The amendment defines a standard dataset of 625 test images used in conformance testing. Each image is accompanied by a reference image signature descriptor for comparison.

• Comparison Criteria

  • Global components: No more than 16 bits can differ out of 512 for each segment.
  • Local components: A spatial correspondence is established between local signatures based on their X and Y coordinates, and no more than 3 bits may differ out of 60 for each matched pair. At least 78 out of 80 local signatures must meet this criterion.

Applications

• Multimedia Search and Retrieval
  Accurate image signature extraction plays a vital role in content-based image retrieval systems, allowing fast and reliable matching of images in large multimedia databases.

• Digital Rights Management (DRM)
  Image signatures can be used to verify authenticity and detect unauthorized copies, thus supporting copyright protection mechanisms.

• Content Filtering and Moderation
  Image signatures help identify specific visual content patterns to enforce content policies in social platforms and media services.

• Multimedia Indexing
  Tools implementing this standard assist in indexing vast multimedia collections, making content easier to organize and access.

Related Standards

• ISO/IEC 15938 (MPEG-7 Multimedia Content Description Interface)
  The parent standard defining multimedia content description tools, including the image signature descriptor referenced by this amendment.

• ISO/IEC 15938-3
  Specifies audiovisual description tools, including extraction methods for various descriptors like image signatures.

• ISO/IEC JTC 1/SC 29 Standards
  Covers coding and transmission standards for audio, video, and multimedia data, providing the broader framework within which this amendment operates.

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ISO/IEC 15938-7:2003/Amd 5:2010 sets clear guidelines and conformance tests for developers and implementers of image signature extraction tools, promoting robust and interoperable multimedia content description. Adhering to this amendment ensures consistency, accuracy, and quality in the extraction of image signatures, driving forward innovation in multimedia indexing, retrieval, and content analysis.

Standards Content (Sample)

INTERNATIONAL ISO/IEC
STANDARD 15938-7
First edition
2003-12-01
AMENDMENT 5
2010-08-01
Information technology — Multimedia
content description interface —
Part 7:
Conformance testing
AMENDMENT 5: Conformance testing for
image signature tools
Technologies de l'information — Description de l'interface du contenu
multimédia —
Partie 7: Essais de conformité
AMENDEMENT 5: Essai de conformité pour outils de signature d'image

Reference number
ISO/IEC 15938-7:2003/Amd.5:2010(E)
©
ISO/IEC 2010
ISO/IEC 15938-7:2003/Amd.5:2010(E)
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ISO/IEC 15938-7:2003/Amd.5:2010(E)
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.
Amendment 5 to ISO/IEC 15938-7:2003 was prepared by Joint Technical Com
...

INTERNATIONAL ISO/IEC
STANDARD 15938-7
First edition
2003-12-01
AMENDMENT 5
2010-08-01
Information technology — Multimedia
content description interface —
Part 7:
Conformance testing
AMENDMENT 5: Conformance testing for
image signature tools
Technologies de l'information — Description de l'interface du contenu
multimédia —
Partie 7: Essais de conformité
AMENDEMENT 5: Essai de conformité pour outils de signature d'image

Reference number
ISO/IEC 15938-7:2003/Amd.5:2010(E)
©
ISO/IEC 2010
ISO/IEC 15938-7:2003/Amd.5:2010(E)

PDF disclaimer
PDF files may contain embedded typefaces. In accordance with Adobe's licensing policy, such files 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 a PDF file, parties accept therein the responsibility of not infringing Adobe's 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 the PDF file(s) constituting this document can be found in the General Info relative to
the file(s); the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the files are suitable for
use by ISO member bodies. In the unlikely event that a problem relating to them is found, please inform the Central Secretariat at the
address given below.
This CD-ROM contains:
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viewed using Adobe® Acrobat® Reader;
2) files for conformance testing for image signature tools.
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