ISO/IEC 15938-14:2018 情報技術—マルチメディアコンテンツ記述インターフェース—パート14：視覚探索用のコンパクト記述子のリファレンスソフトウェア、適合性および使用ガイドライン | ページ 2

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.

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This document was prepared by ISO/IEC JTC 1, Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia information.

A list of all parts in the ISO/IEC 15938 series can be found on the ISO website.

Introduction

ISO/IEC 15938 (all parts) 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 ISO/IEC 15938 (all parts).

• 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.

ISO/IEC 15938 consists of 14 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 ISO/IEC 15938.
• Part 7 – Conformance testing : specifies the guidelines and procedures for testing conformance of implementations of ISO/IEC 15938.
• 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.
• Part 14 – Reference software, conformance and usage guidelines for compact descriptors for visual search : provides the reference software, specifies the conformance testing, and gives usage guidelines for compact descriptors for visual search.

The compact descriptors for visual search (CDVS) tool specified in ISO/IEC 15938-13 is designed to enable efficient and interoperable visual search applications, allowing visual content matching in images. Visual content matching includes matching of views of objects, landmarks, and printed documents, while being robust to partial occlusions as well as changes in viewpoint, camera parameters, and lighting conditions.

ISO/IEC 15938-14:

• specifies the reference software for CDVS (Clause 5);
• specifies the conformance testing dataset, reference descriptors and conditions for CDVS (Clause 6);
• provides guidelines for the usage of CDVS (Clause 7).

The CDVS reference software is provided at http://standards.iso.org/iso-iec/15938/-14/ed-1/en .

1 Scope

This document provides the reference software, specifies the conformance testing, and gives usage guidelines for ISO/IEC 15938-13.

2 Normative references

There are no normative references in this document.

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses: