Information technology — JPEG 2000 image coding system — Part 16: Encapsulation of JPEG 2000 images into ISO/IEC 23008-12

This document specifies the encapsulation of image formats specified in the JPEG 2000 family of Recommendations | International Standards in the framework defined in ISO/IEC 23008-12.

Technologies de l'information — Système de codage d'images JPEG 2000 — Partie 16: Titre manque

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Publication Date
14-Sep-2021
Current Stage
6060 - International Standard published
Start Date
15-Sep-2021
Completion Date
15-Sep-2021
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INTERNATIONAL ISO/IEC
STANDARD 15444-16
Second edition
2021-09
Information technology — JPEG 2000
image coding system —
Part 16:
Encapsulation of JPEG 2000 images
into ISO/IEC 23008-12
Reference number
ISO/IEC 15444-16:2021(E)
ISO/IEC 2021
---------------------- Page: 1 ----------------------
ISO/IEC 15444-16:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO/IEC 2021

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO/IEC 2021 – All rights reserved
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ISO/IEC 15444-16:2021(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.

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)

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).

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 ITU-T (as Rec. ITU-T T.815) 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 second edition cancels and replaces the first edition (ISO/IEC 15444-16:2019) which has been

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

‒ the encapsulation of Rec. ITU-T T.802 | ISO/IEC 15444-3 image sequences is deprecated, and

replaced by the encapsulation of Rec. ITU-T T.800 | ISO/IEC 15444-1 image sequences;

‒ adds support for quality and resolution layers;

‒ the syntax and semantics of the JPEG 2000 header item property are clarified; and

‒ reader conformance requirements are removed.

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 2021 – All rights reserved iii
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ISO/IEC 15444-16:2021 (E)
CONTENTS

..................................................................................................................................................................... Page

1 Scope ......................................................................................................................................................... 1

2 Normative references .................................................................................................................................. 1

2.1 Identical Recommendations | International Standards....................................................................... 1

2.2 Paired Recommendations | International Standards equivalent in technical content .......................... 1

2.3 Additional references ....................................................................................................................... 1

3 Definitions.................................................................................................................................................. 1

3.1 Terms defined elsewhere ................................................................................................................. 1

3.2 Terms defined in this Recommendation | International Standard ...................................................... 1

4 Abbreviations ............................................................................................................................................. 2

5 Conventions ............................................................................................................................................... 2

6 Encapsulation of Rec. ITU-T T.800 | ISO/IEC 15444-1 images and image collections ................................ 2

6.1 General ............................................................................................................................................ 2

6.2 JPEG 2000 coded image item .......................................................................................................... 2

6.3 JPEG 2000 header item property ...................................................................................................... 2

6.4 JPEG 2000 layers box ...................................................................................................................... 3

6.5 File conformance ............................................................................................................................. 4

6.6 Media type ....................................................................................................................................... 4

6.7 Media type registration .................................................................................................................... 4

7 Encapsulation of Rec. ITU-T T.800 | ISO/IEC 15444-1 sequences ............................................................. 5

7.1 General ............................................................................................................................................ 5

7.2 JPEG 2000 image sequence ............................................................................................................. 5

7.3 JPEG 2000 visual sample entry ........................................................................................................ 6

7.4 JPEG 2000 prefix ............................................................................................................................ 6

7.5 JPEG 2000 header info .................................................................................................................... 6

7.6 File conformance ............................................................................................................................. 6

7.7 Media type ....................................................................................................................................... 7

7.8 Media type registration .................................................................................................................... 7

8 Encapsulation of Rec. ITU-T T.802 | ISO/IEC 15444-3 image sequences (informative) .............................. 8

Bibliography ......................................................................................................................................................... 9

Rec. ITU-T T.815 (06/2021) iii
© ISO/IEC 2021 – All rights reserved
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ISO/IEC 15444-16:2021 (E)
INTERNATIONAL STANDARD ISO/IEC 15444-16
RECOMMENDATION ITU-T T.815
Information technology – JPEG 2000 image coding system –
Encapsulation of JPEG 2000 images into ISO/IEC 23008-12
1 Scope

This Recommendation | International Standard specifies the encapsulation of image formats specified in the JPEG 2000

family of Recommendations | International Standards in the framework defined in ISO/IEC 23008-12.

2 Normative references

The following Recommendations and International Standards contain provisions which, through reference in this text,

constitute provisions of this Recommendation | International Standard. For dated references, only the edition cited

applies. For undated references, the latest edition of the referenced document (including any amendments) applies. At

the time of publication, the editions indicated in dated references were valid. All Recommendations and Standards are

subject to revision, and parties to agreements based on this Recommendation | International Standard are encouraged to

investigate the possibility of applying the most recent edition of the Recommendations and Standards listed below.

Members of IEC and ISO maintain registers of currently valid International Standards. The Telecommunication

Standardization Bureau of the ITU maintains a list of currently valid ITU-T Recommendations.

2.1 Identical Recommendations | International Standards

– Recommendation ITU-T T.800 (latest) | ISO/IEC 15444-1: (latest), Information technology – JPEG 2000

image coding system – Core coding system.

2.2 Paired Recommendations | International Standards equivalent in technical content

None.
2.3 Additional references

– ISO/IEC 23008-12:2017, Information technology – High efficiency coding and media delivery in

heterogeneous environments – Part12: Image file format.
3 Definitions
3.1 Terms defined elsewhere

This Recommendation | International Standard uses the following terms defined elsewhere:

For the purposes of this Recommendation | International Standard, the definitions given in ISO/IEC 23008-12 apply.

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

– ITU terminology database: https://www.itu.int/go/terms
– ISO online browsing platform: https://www.iso.org/obp
– IEC Electropedia: http://www.electropedia.org/
3.2 Terms defined in this Recommendation | International Standard
This Recommendation | International Standard defines the following terms:
None.
Rec. ITU-T T.815 (06/2021) 1
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ISO/IEC 15444-16:2021 (E)
4 Abbreviations

For the purposes of this Recommendation | International Standard, the following abbreviations apply:

JPEG Joint Photographic Experts Group
5 Conventions
None.

6 Encapsulation of Rec. ITU-T T.800 | ISO/IEC 15444-1 images and image collections

6.1 General

This clause specifies the encapsulation of individual JPEG 2000 codestreams, as specified in Rec. ITU-T T.800 |

ISO/IEC 15444-1, as individual images or as image collections as specified in ISO/IEC 23008-12.

6.2 JPEG 2000 coded image item

A JPEG 2000 coded image item is a coded image item, as defined in ISO/IEC 23008-12, with type 'j2k1' that

conforms to the provisions of this subclause.

The body of the coded image item shall be exactly one Contiguous Codestream box as specified in Rec. ITU-T T.800 |

ISO/IEC 15444-1.

NOTE 1 – The JPEG 2000 codestream contained in the Contiguous Codestream box can require capabilities not defined in

Rec. ITU-T T.800 | ISO/IEC 15444-1, including those specified in Rec. ITU-T T.814 | ISO/IEC 15444-15. Such required

capabilities are signalled in the CAP Marker Segment specified in Rec. ITU-T T.800 | ISO/IEC 15444-1.

The coded image item shall be associated with exactly one JPEG 2000 header item property specified in 6.3, and the

essential field of the item property shall be equal to 1.

The coded image item shall be associated with exactly one 'colr' item property, and the essential field of that item

property shall be equal to 1.

If a 'pixi' item property is associated with the coded image item, its information shall be consistent with the Ssiz

fields of the SIZ marker of the JPEG 2000 codestream within the Contiguous Codestream box.

If a 'lsel' item property is associated with the coded image item,
...

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