ISO/IEC 24800-2:2021 情報技術— JPSearch —パート2：スキーマとオントロジーの登録、識別、管理 | ページ 2

Foreword

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The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, 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, 2 (see www.iso.org/directives or www.iec.ch/members_experts/refdocs ).

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 patents.iec.ch ).

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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 24800-2:2011), which has been technically revised. It also incorporates the amendment ISO/IEC 24800-2:2011/Amd.1:2015.

The main changes compared to the previous edition are as follows:

• editorial changes throughout the text to fully align this document with ISO/IEC Directives;
• changes to the registration procedure for JPOnto in 8.3 and Annex A.

A list of all parts in the ISO/IEC 24800 series can be found on the ISO and IEC websites.

Introduction

This document provides a standardized set of technologies for metadata representation, querying and management of images. It specifies the JPSearch’s Core Metadata Schema as the cornerstone of metadata interoperability in the ISO/IEC 24800 series. It also specifies the structure and rules to which any metadata annotation of images must conform in order to be considered valid within a JPSearch compliant system.

In addition to the definition of JPSearch Core Metadata Schema, the ISO/IEC 24800 series provides a mechanism which allows a JPSearch compliant system taking profit from proprietary or community-specific metadata schemas. A translation rules language is defined, allowing the publication of machine-readable translations between metadata terms belonging to proprietary metadata schemas and metadata terms in the JPSearch Core Metadata Schema. Users can choose which metadata language to use in a JPSearch-based interaction (annotation, querying, etc.) if the proper translations are available.

In order to specify the issues in a detailed manner in this document, this document first provides the fundamental information including scope definition, description of terms and definitions, and conventions that are necessary to understand this document. The definition of JPSearch Core Metadata Schema is described in the context of XML structure. Management of information regarding other metadata schema is also described in respect of registration, maintenance, and translation rules.

1 Scope

This document specifies a series of interfaces to allow disparate systems an interoperable management of image repositories. It also specifies the general rules which govern the usage of metadata in JPSearch and provides a specification which

• provides rules for the representation of image metadata descriptions, consisting of the definition of the JPSearch Core Metadata Schema,
• provides rules for the publication of machine-readable translations between metadata terms belonging to proprietary metadata schemas and metadata terms in the JPSearch Core Metadata Schema, and
• provides rules for the registration and request of metadata schemas and its translation rules or links to them.

JPSearch is an extensible standard. The method of extending the structures and rules beyond the JPSearch Core Metadata Schema is provided in this document.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

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:

Bibliography