ISO/IEC 23090-23:2023

Information technology — Coded representation of immersive media — Part 23: Conformance and reference software for MPEG immersive video

This document specifies a set of tests and procedures designed to indicate whether encoders or decoders meet the requirements specified in ISO/IEC 23090-12.

Technologies de l'information — Représentation codée de média immersifs — Partie 23: Conformité et logiciels de référence pour la vidéo immersive MPEG

General Information

• Status: Published
• Publication Date: 22-Oct-2023
• ICS: 35.040.40 - Coding of audio, video, multimedia and hypermedia 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: 9092 - International Standard to be revised
• Due Date: 26-Jan-2025
• Completion Date: 26-Jan-2025

Standards Content (Sample)

INTERNATIONAL ISO/IEC
STANDARD 23090-23
First edition
2023-10
Information technology — Coded
representation of immersive media —
Part 23:
Conformance and reference software
for MPEG immersive video
Technologies de l'information — Représentation codée de média
immersifs —
Partie 23: Conformité et logiciels de référence pour la vidéo immersive
MPEG
Reference number
© ISO/IEC 2023
© 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: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
© ISO/IEC 2023 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 2
5 Conventions . 2
6 Conformance testing . .2
6.1 General . 2
6.2 Bitstream conformance . 2
6.3 Decoder conformance . 2
6.4 Reference bitstreams . 2
6.5 Procedure to test bitstreams . 3
6.6 Procedure to test decoders . 4
6.6.1 Conformance bitstreams . 4
6.6.2 Contents of the bitstream zip-files . 4
6.6.3 Requirements on decoder output and timing . 4
7 Reference software . 4
7.1 Purpose of the reference software . 4
7.2 Software location . 5
7.3 Software license . 5
7.4 Software installation . 5
7.5 Software architecture . . 5
7.5.1 Reference software encoder . 5
7.5.2 Reference software decoder . 5
8 Decoder output logging process .5
8.1 General decoder output logging process . 5
8.2 General hashing process . 6
8.2.1 General . 6
8.2.2 Hash table pre-computation process . 7
8.2.3 Hash state initialization process . 7
8.2.4 Hash state update process for unsigned integer values . 7
8.2.5 Hash state update process for signed integer values . 7
8.2.6 Hash state update process for floating-point values . 8
8.2.7 Hash value computation process . 8
8.3 Video data hashing process . . 8
8.3.1 Occupancy video data hashing process . 8
8.3.2 Geometry video data hashing process . 8
8.3.3 Attribute video data hashing process . 9
8.3.4 Packed video data hashing process . 9
8.4 Block to patch map hashing process . 9
8.5 Patch params list hashing process . 10
8.6 View params list hashing process . 10
8.7 Atlas sequence parameter set MIV extension hashing process . 11
8.8 Atlas frame parameter set MIV extension hashing process . 11
8.9 Common atlas sequence parameter set MIV extension hashing process .12
Bibliography .13
iii
© ISO/IEC 2023 – All rights reserved

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 23090 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.
iv
© ISO/IEC 2023 – All rights reserved

Introduction
ISO/IEC 23090-12 was developed to support compression of immersive video content, in which a real
or virtual 3D scene is captured by multiple real or virtual cameras. The use of this document enables
storage and distribution of immersive video content over existing and future networks, for playback
with 6 degrees of freedom of view position and orientation.
v
© ISO/IEC 2023 – All rights reserved

INTERNATIONAL STANDARD ISO/IEC 23090-23:2023(E)
Information technology — Coded representation of
immersive media —
Part 23:
Conformance and reference software for MPEG immersive
video
1 Scope
This document specifies a set of tests and procedures designed to indicate whether encoders or
decoders meet the requirements specified in ISO/IEC 23090-12.
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.
ISO/IEC 23090-12:2023, Information technology — Coded representation of immersive media — Part 12:
MPEG immersive video
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/IEC 23090-12 and the
following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
alternative decoder
decoder (3.4) other than the reference software decoder (3.7)
3.2
bitstream
sequence of bits that conforms to the syntax requirements specified by ISO/IEC 23090-12 or sequence
of bits to be tested for conformance to those syntax requirements
3.3
bitstream zip-file
archive file containing a bitstream plus files with information on that bitstream for the purpose of
decoder conformance testing
3.4
decoder
embodiment of the decoding process specified by ISO/IEC 23090-12 or process to be tested for
conformance to that decoding process specifica
...