ISO/IEC INTERNATIONAL STANDARD 14492 Second edition 2019-03 Information technology Lossy/ lossless coding of bi-level images Technologies de I'information - Codage avec ou sans perte des imagesautrait Referencenumber IEC IS0/IEC14492:2019(E) @IS0/IEC2019 IS0/IEC14492:2019(E) COPYRIGHTPROTECTEDDOCUMENT @IS0/IEC2019 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may on the internet or an intranet, without prior written permission. Permission can be requested from either Iso at the address below orIso's memberbody in the countryof therequester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier,Geneva Phone:+41227490111 Fax:+41 22 749 09 47 Email: [email protected] Website: www.iso.org Published in Switzerland ii @IS0/IEC 2019-All rights reserved ISO/IEC14492:2019 (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 takepart 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 (see www.iso.org/directives). 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 http://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 This document was prepared by ITU-T as ITU-T Rec. T.88 (2018) and drafted in accordance with its editorial rules. It was adopted 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 14492:2001), which has been technically revised. It also incorporates ISO/IEC 14492:2001/Amd.1:2004, ISO/IEC 14492:2001/Amd.2:2003 and ISO/IEC14492:2001/Amd.3:2012. complete listing of these bodies can be found at www.iso.org/members.html. ISO/IEC 2019-All rights reserved ITU-T Rec.T.88 (2018 E)ii