ISO/IEC 15444-2:2023

Information technology — JPEG 2000 image coding system — Part 2: Extensions

This document defines a set of lossless (bit-preserving) and lossy compression methods for coding continuous-tone, bi-level, grey-scale, colour digital still images, or multi-component images. This document: – specifies extended decoding processes for converting compressed image data to reconstructed image data; – specifies an extended codestream syntax containing information for interpreting the compressed image data; – specifies an extended file format; – specifies a container to store image metadata; – defines a standard set of image metadata; – provides guidance on extended encoding processes for converting source image data to compressed image data; – provides guidance on how to implement these processes in practice.

Technologies de l'information — Système de codage d'images JPEG 2000 — Partie 2: Extensions

General Information

• Status: Published
• Publication Date: 09-Nov-2023
• ICS: 35.040.30 - Coding of graphical and photographical 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: 10-Nov-2023
• Due Date: 31-Dec-2023
• Completion Date: 10-Nov-2023

Relations

• Revises: ISO/IEC 15444-2:2021 - Information technology — JPEG 2000 image coding system — Part 2: Extensions
• Effective Date: 06-Jun-2022

Standards Content (Sample)

INTERNATIONAL ISO/IEC
STANDARD 15444-2
Third edition
2023-11
Information technology — JPEG 2000
image coding system —
Part 2:
Extensions
Technologies de l'information — Système de codage d'images JPEG
2000 —
Partie 2: Extensions
Reference number
ISO/IEC 15444-2:2023(E)
© ISO/IEC 2023

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ISO/IEC 15444-2:2023(E)
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ii
  © ISO/IEC 2023 – All rights reserved

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ISO/IEC 15444-2:2023(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
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see www.iso.org/iso/foreword.html. In the IEC, see www.iec.ch/understanding-standards.
This document was prepared by ITU-T (as Rec. ITU-T T.801) and drafted in accordance with its editorial
rules, in collaboration with Joint Technical Committee ISO/IEC JTC 1, Information technology,
Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia information.
This third edition cancels and replaces the second edition (ISO/IEC 15444-2:2021), which has been
technically revised.
The main changes are as follows:
— Support for progression order extensions.
A list of all parts in the ISO/IEC 15444 series can be found on the ISO and IEC websites.
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 and www.iec.ch/national-
committees.
© ISO/IEC 2023 – All rights reserved iii

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ISO/IEC 15444-2:2023 (E)
CONTENTS
Page
1 Scope . 1
2 Normative references . 1
3 Definitions . 2
4 Abbreviations . 4
5 Conventions . 4
6 General
...