Technical IEC ISO Report IS0/IEC TR 19566-9 First edition Information technology JPEG 2024-08 Systems - Part 9: JPEG extensions mechanisms to facilitate forwards and backwards compatibility Technologies de I'information - Systemes JPEG - Partie 9: Mécanismes d'extension JPEG pour faciliter la compatibilité ascendante et descendante Referencenumber ISO/IEC TR19566-9:2024(en) @ ISO/IEC 2024 IS0/IEC TR 19566-9:2024(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 i IS0/IEC TR 19566-9:2024(en) Contents Page Foreword. .iv Introduction V Scope. 1 1 2 Normative references 1 3 Terms, definitions, and abbreviated terms. 1 3.1 1 Terms and definitions 3.2 Abbreviated terms. 2 Conventions - Operators 2 4 Arithmetic operators 3 4.1 4.2 3 Logical operators.. 4.3 Relational operators. 3 4.4 Precedence order of operators. 3 4.5 Mathematical functions. 4 General extensions mechanisms 5 4 5.1 General 4 5.2 Extensions mechanisms for codestreams 4 5.3 Extension mechanisms for file formats.. 6 5.4 File Typebox. 7 5.5 JPEG Universal Metadata Box Format (JUMBF) 8 5.6 Compressed boxes. 8 Extension mechanisms for ITU Recommendation T.81 |IS0/IEC 10918-1 (JPEG 1) 6 9 6.1 Application markers 9 APP11 based extensions 6.2 .9 6.3 JUMBFBoxes. .10 Extension mechanisms for Rec. ITU-T T.800 I IS0/IEC 15444 (JPEG 2000) series 10 7.1 10 General 7.2 CAP marker .11 7.3 Profile indicators .11 7.4 COD marker. 12 7.5 File Type Box 12 7.6 Reader Requirements Box 12 Extension mechanisms for the ISO/IEC 21122 series (JPEG XS) 13 8 8.1 General 13 8.2 CAP marker 13 8.3 Marker allocation .14 8.4 Profile, level and sublevel indicators 14 8.5 Fileformat. 15 Extension mechanisms for ISO/IEC 18181 (JPEG XL) .15 9 9.1 15 General 9.2 Codestream extensions 15 9.3 New component types. 15 9.4 File Type Box .16 Bibliography 17 @ IS0/IEC 2024 - All rights reserved iii