ISO/IEC 18477-3:2023
(Main)Information technology — Scalable compression and coding of continuous-tone still images — Part 3: Box file format
Information technology — Scalable compression and coding of continuous-tone still images — Part 3: Box file format
This document specifies box-based container format, referred to as JPEG XT, which is designed primarily for continuous-tone photographic content.
Technologies de l'information — Compression échelonnable et codage d'images plates en ton continu — Partie 3: Format de la liste de fichiers
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INTERNATIONAL ISO/IEC
STANDARD 18477-3
Second edition
2023-12
Information technology — Scalable
compression and coding of
continuous-tone still images —
Part 3:
Box file format
Technologies de l'information — Compression échelonnable et codage
d'images plates en ton continu —
Partie 3: Format de la liste de fichiers
Reference number
ISO/IEC 18477-3:2023(E)
© ISO/IEC 2023
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ISO/IEC 18477-3:2023(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO/IEC 2023
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 2023 – All rights reserved
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ISO/IEC 18477-3:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, abbreviated terms and symbols . 1
3.1 Terms and definitions . 1
3.2 Abbreviated terms . 4
3.3 Symbols . 4
4 Conventions . 5
4.1 Conformance language . 5
4.2 Operators . 5
4.2.1 Arithmetic operators . 5
4.2.2 Logical operators . 5
4.2.3 Relational operators . 6
4.2.4 Precedence order of operators . 6
4.2.5 Mathematical functions . 6
5 Overview . 7
5.1 General . 7
5.2 High-level overview on JPEG XT .
...
FINAL
INTERNATIONAL ISO/IEC
DRAFT
STANDARD FDIS
18477-3
ISO/IEC JTC 1/SC 29
Information technology — Scalable
Secretariat: JISC
compression and coding of
Voting begins on:
2023-08-23 continuous-tone still images —
Voting terminates on:
Part 3:
2023-10-18
Box file format
Technologies de l'information — Compression échelonnable et codage
d'images plates en ton continu —
Partie 3: Format de la liste de fichiers
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/IEC FDIS 18477-3:2023(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO/IEC 2023
---------------------- Page: 1 ----------------------
ISO/IEC FDIS 18477-3:2023(E)
FINAL
INTERNATIONAL ISO/IEC
DRAFT
STANDARD FDIS
18477-3
ISO/IEC JTC 1/SC 29
Information technology — Scalable
Secretariat: JISC
compression and coding of
Voting begins on:
continuous-tone still images —
Voting terminates on:
Part 3:
Box file format
Technologies de l'information — Compression échelonnable et codage
d'images plates en ton continu —
Partie 3: Format de la liste de fichiers
COPYRIGHT PROTECTED DOCUMENT
© ISO/IEC 2023
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.
RECIPIENTS OF THIS DRAFT ARE INVITED TO
ISO copyright office
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
CP 401 • Ch. de Blandonnet 8
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
CH-1214 Vernier, Geneva
DOCUMENTATION.
Phone: +41 22 749 01 11
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: copyright@iso.org
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO
ISO/IEC FDIS 184773:2023(E)
Website: www.iso.org
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
Published in Switzerland
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN
DARDS TO WHICH REFERENCE MAY BE MADE IN
ii
© ISO/IEC 2023 – All rights reserved
NATIONAL REGULATIONS. © ISO/IEC 2023
---------------------- Page: 2 ----------------------
ISO/IEC FDIS 18477-3:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, abbreviated terms and symbols . 1
3.1 Terms and definitions . 1
3.2 Abbreviated terms . 4
3.3 Symbols . 5
4 Conventions . 5
4.1 Conformance language . 5
4.2 Operators .
...
ISO/IEC JTC 1/SC 29/WG1 N100475
99th meeting – Online – April 24-28, 2023
ISO/IEC JTC 1/SC 29/WG 1
(& ITU-T SG16)
Coding of Still Pictures
JBIG JPEG
Joint Bi-level Image Joint Photographic
Experts Group Experts Group
TITLE: Text of ISO/IEC FDIS 18477-3
Secretariat: JISC
Date: 2023-08-08
Information technology –
---------------------- Page: 1 ----------------------
Information Technology: — Scalable compression and coding
of continuous-tone still images — —
Part 3:
Box file format
Draft ITU-T Recommendation | International Standard
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© ISO/IEC 2023 – All rights reserved
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Technologies de l'information — Compression échelonnable et codage d'images plates en ton continu —
Partie 3: Format de la liste de fichiers
FDIS stage
---------------------- Page: 4 ----------------------
ISO/IEC FDIS 18477-3:2023(E)
© ISO/IEC 2023
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
E-mail: copyright@iso.org
Website: www.iso.org
Published in Switzerland
v© ISO/IEC 2023 – All rights reserved v
---------------------- Page: 5 ----------------------
ISO/IEC FDIS 18477-3:2023(E)
vi vi ©
ISO/IEC 2023 – All rights reserved
---------------------- Page: 6 ----------------------
ISO/IEC FDIS 18477-3:2023(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
members of ISO or IEC participate in the development of International Standards through technical
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ISO and IEC technical committees collaborate in fields of mutual interest. Other international
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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/directiveswww.iso.org/directives or
www.iec.ch/members_experts/refdocswww.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.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.www.iso.org/iso/foreword.html. In the IEC, see
www.iec.ch/understanding-standardswww.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.
This second edition cancels and replaces the first edition (ISO/IEC 18477-3:2015), which has been
technically revised.
The main changes are as follows:
— — This edition provides editorial improvements on the usage of the JPEG XT marker segment.
A list of all parts in the ISO/IEC 18477 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 thes
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