ISO/IEC 21122-2:2022/Amd 1:2022
(Amendment)Information technology — JPEG XS low-latency lightweight image coding system — Part 2: Profiles and buffer models — Amendment 1: Profile and sublevel for 4:2:0 content
Information technology — JPEG XS low-latency lightweight image coding system — Part 2: Profiles and buffer models — Amendment 1: Profile and sublevel for 4:2:0 content
Technologies de l'information — Système de codage d'images léger à faible latence JPEG XS — Partie 2: Profils et modèles tampons — Amendement 1: Titre manque
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INTERNATIONAL ISO/IEC
STANDARD 21122-2
Second edition
2022-03
AMENDMENT 1
2022-11
Information technology — JPEG XS
low-latency lightweight image coding
system —
Part 2:
Profiles and buffer models
AMENDMENT 1: Profile and sublevel for
4:2:0 content
Reference number
ISO/IEC 21122-2:2022/Amd. 1:2022(E)
© ISO/IEC 2022
---------------------- Page: 1 ----------------------
ISO/IEC 21122-2:2022/Amd. 1:2022(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO/IEC 2022
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 2022 – All rights reserved
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ISO/IEC 21122-2:2022/Amd. 1:2022(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 https://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 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 21122 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.
iii
© ISO/IEC 2022 – All rights reserved
---------------------- Page: 3 ----------------------
ISO/IEC 21122-2:2022/Amd. 1:2022(E)
Information technology — JPEG XS low-latency lightweight
image coding system —
Part 2:
Profiles and buffer models
AMENDMENT 1: Profile and sublevel for 4:2:0 content
A.2.1, Table A.3
Replace the table with the following table:
Table A.3 — JPEG XS High profiles
Profile High High High
420.12 444.12 4444.12
Number N of smoothing buffer units of the decoder 16 16 16
sbu
model
Smoothing buffer offset S in bits 1 024 1 024 1 024
sbo
Component bit precision (B[i]) 8, 10, 12 8, 10, 12 8, 10, 12
Internal precision (Bw) 20 20 20
# fractional bits for DWT coefficients (Fq) 8 8 8
Non-linear transform Disallowed Disallowed Disallowed
Raw-mode selection per packet flag (Rl) 0 0 0
Chroma sampling formats 4:2:0 4:0:0 4:0:0
4:2:2 4:2:2
4:4:4 4:4:4
4:2:2:4
4:4:4:4
Colour transformation 0 (None) 0 (None) for 0 (None) for
any sampling any sampling
format, or format, or
optionally optionally
1 (RCT) for 1 (RCT) for
4:4:4 4:4:4 and
4:4:4:4
Number of vertical decompositions 1, 2 0, 1, 2 0, 1, 2
Number of horizontal decompositions [1-5] [1-5] [1-5]
Number components with suppressed decomposition 0 0 0
(S
...
INTERNATIONAL ISO/IEC
STANDARD 21122-2
Second edition
2022-03
AMENDMENT 1
Information technology — JPEG XS
low-latency lightweight image coding
system —
Part 2:
Profiles and buffer models
AMENDMENT 1: Profile and sublevel for
4:2:0 content
PROOF/ÉPREUVE
Reference number
ISO/IEC 21122-2/Amd. 1:2022(E)
© ISO/IEC 2022
---------------------- Page: 1 ----------------------
ISO/IEC 21122-2/Amd. 1:2022(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO/IEC 2022
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
PROOF/ÉPREUVE © ISO/IEC 2022 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/IEC 21122-2/Amd. 1:2022(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 https://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 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 21122 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.
iii
© ISO/IEC 2022 – All rights reserved PROOF/ÉPREUVE
---------------------- Page: 3 ----------------------
ISO/IEC 21122-2/Amd. 1:2022(E)
Information technology — JPEG XS low-latency lightweight
image coding system —
Part 2:
Profiles and buffer models
AMENDMENT 1: Profile and sublevel for 4:2:0 content
A.2.1, Table A.3
Replace the table with the following table:
Table A.3 — JPEG XS High profiles
Profile High High High
420.12 444.12 4444.12
Number N of smoothing buffer units of the decoder 16 16 16
sbu
model
Smoothing buffer offset S in bits 1 024 1 024 1 024
sbo
Component bit precision (B[i]) 8, 10, 12 8, 10, 12 8, 10, 12
Internal precision (Bw) 20 20 20
# fractional bits for DWT coefficients (Fq) 8 8 8
Non-linear transform Disallowed Disallowed Disallowed
Raw-mode selection per packet flag (Rl) 0 0 0
Chroma sampling formats 4:2:0 4:0:0 4:0:0
4:2:2 4:2:2
4:4:4 4:4:4
4:2:2:4
4:4:4:4
Colour transformation 0 (None) 0 (None) for 0 (None) for
any sampling any sampling
format, or format, or
optionally optionally
1 (RCT) for 1 (RCT) for
4:4:4 4:4:4 and
4:4:4:4
Number of vertical decompositions 1, 2 0, 1, 2 0, 1, 2
Number of horizontal decompositions [1-5] [1-5] [1-5]
Number components with suppressed decomposition 0 0 0
(
...
ISO/IEC JTC 1/SC 29/WG1 N100249
Online, July 25-29, 2022
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: ISO/IEC 21122-2 2ED :2022/AMD1 “Profile and sublevel for 4:2:0 content”
SOURCE: JTC 1/SC 29/WG 1
PROJECT: ISO/IEC 21122-2 2ED
STATUS: Publication
© ISO 2022 – All rights reserved
---------------------- Page: 1 ----------------------
ISO #####-#:####(X)
REQUESTED
ACTION:
DISTRIBUTION: SC 29
Contact:
ISO/IEC JTC 1/SC 29/WG1 Convener – Prof. Touradj Ebrahimi
EPFL/STI/IEL/GR-EB, Station 11, CH-1015 Lausanne, Switzerland
Tel: +41 21 693 2606, Fax: +41 21 693 7600, E-mail: Touradj.Ebrahimi@epfl.ch
2 © ISO #### – All rights reserved
---------------------- Page: 2 ----------------------
ISO 21122-2:2022/AMD1(E)
ISO SC 29/WG 1
Date: 2022-01-2110
Information technology – JPEG XS low-latency lightweight image coding system – Part 2: Profiles
and buffer models
AMENDMENT 1: Profile and sublevel for 4:2:0 content
AMENDMENT 1: Profile and sublevel for 4:2:0 content
DAMD stage
Warning for WDs and CDs
This document is not an ISO International Standard. It is distributed for review and comment. It is subject to
change without notice and may not be referred to as an International Standard.
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 supporting documentation.
A model manuscript of a draft International Standard (known as “The Rice Model”) is available at
https://www.iso.org/iso/model_document-rice_model.pdf
© ISO 2022 – All rights reserved
---------------------- Page: 3 ----------------------
© ISO 20XX
---------------------- Page: 4 ----------------------
ISO/IEC 21122-2/Amd. 1:2022/AMD1(E)
© ISO 2022
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.orgwww.iso.org
Published in Switzerland
ii © ISO 2022 – All rights reserved
ii © ISO/IEC 2022 – All rights reserved
---------------------- Page: 5 ----------------------
ISO/IEC 21122-2/Amd. 1:2022/AMD1(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 https://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 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 21122 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 2022 – All rights reserved iii
© ISO/IEC 2022 – All rights reserved iii
---------------------- Page: 6 ----------------------
ISO/IEC 21122-2/Amd. 1:2022(E)
Information technology – JPEG XS low-latency lightweight image
coding system –
Part 2:
Profiles and buffer models
AMENDMENT 1: Profile and sublevel for 4:2:0 content
Part 2:
Profiles and buffer models
AMENDMENT 1: Profile and sublevel for 4:2:0 content
A.2.1, Table A.3
Replace the table with the following table:
Table A.3 — JPEG XS High profiles
Profile High High High
420.12 444.12 4444.12
Number Nsbu of smoothing buffer units of the decoder 16 16 16
model
Smoothing buffer offset Ssbo in bits 1 024 1 024 1 024
Component bit preci
...
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