INTERNATIONAL ISO/IEC STANDARD 18181-4 First edition 2022-08 Information technology JPEG XL image coding system - Part 4: Reference software Technologies de I'information - Systeme de codage d'images JPEG XL - Partie 4: Logiciel de réference Reference number IS0/IEC 18181-4:2022(E) ISO EC IS0/IEC 2022 IS0/IEC 18181-4:2022(E) COPYRIGHTPROTECTED DOCUMENT @IS0/IEC2022 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 memberbody inthe country of the requester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 0111 Email: copyright@iso.org Website: www.iso.org Published in Switzerland ii IS0/IEC2022-Allrightsreserved