IEC International iso Standard IS0/IEC 23090-18 First edition Information technology - Coded 2024-01 representation of immersive media - Part 18: AMENDMENT 1 2024-09 Carriage of geometry-based point cloud compression data AMENDMENT 1: Support for temporal scalability Technologies de I'information - Représentation codée de média immersifs Partie 18: Transport des données de compression des nuages de points basée sur la géométrie AMENDEMENT 1: Prise en charge de I'échelonnabilite temporelle Referencenumber IS0/IEC 23090-18:2024/Amd.1:2024(en) @ ISO/IEC 2024 IS0/IEC 23090-18:2024/Amd. 1:2024(en) COPYRIGHT PROTECTED DOCUMENT @IS0/IEC2024 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 ofthe requester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone:+41227490111 Email: [email protected] Website: www.iso.org Published in Switzerland @ IS0/IEC 2024 - All rights reserved ii IS0/IEC 23090-18:2024/Amd. 1:2024(en) 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/lEC Directives, Part 1. In particular, the different approval criteria needed for the different types of documents 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). ISsO 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/n