ISO/IEC TR 19566-9:2024 情報技術 — JPEG システム — Part 9:前方互換性および後方互換性を促進するための JPEG 拡張メカニズム | ページ 2

3.1 用語と定義

この文書では、ITU-T T.800 | に記載されている用語と定義を使用します。 ISO/IEC 15444-1, ITU-T T.801 | ISO/IEC 15444-2, ITU-T T.802 | ISO/IEC 15444-3, ISO/IEC 18181-1, ISO/IEC TR 19566-1, ISO/IEC 21122-1 および以下が適用されます。

ISO と IEC は、標準化に使用する用語データベースを次のアドレスで維持しています。

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 or www.iec.ch/members_experts/refdocs ).

ISO and IEC draw attention to the possibility that the implementation of this document may involve the use of (a) patent(s). ISO and IEC take no position concerning the evidence, validity or applicability of any claimed patent rights in respect thereof. As of the date of publication of this document, ISO and IEC had not received notice of (a) patent(s) which may be required to implement this document. However, implementers are cautioned that this may not represent the latest information, which may be obtained from the patent database available at www.iso.org/patents and https://patents.iec.ch . ISO and IEC shall not be held responsible for identifying any or all such patent rights.

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 . In the IEC, see www.iec.ch/understanding-standards .

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 .

A list of all parts in the ISO/IEC 19566 series can be found on the ISO and IEC websites.

Introduction

This document collects guiding principles on how standards discussed in ISO/IEC TR 19566-1 provide mechanisms for forwards compatibility, so called extension mechanisms, both on the basis of the codestream and the file format and lists specific implementations of these guiding principles in particular standards.

The purpose of this document is to provide documentation on these principles for the preparation of future extensions of these standards, and to ensure consistency of extension principles amongst standards.

1 Scope

This document summarizes mechanisms by which existing file formats and codestreams, such as those specified in ISO/IEC TR 19566-1, can be extended in a forward and backward-compatible way.

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, definitions, and abbreviated terms

3.2 Abbreviated terms

Bibliography