ISO/IEC INTERNATIONAL STANDARD 18477-7 Second edition 2017-05 Information technology Scalable compression and coding of continuous-tone still images Part 7: HDR Floating-Point Coding Technologies de I'information - Compression échelonnable et codage d'images plates en ton continu - Partie 7: Codage de la virgule flottante en HDR Reference number IEC IS0/IEC18477-7:2017(E) S @IS0/IEC2017 Nof fsr Resaley a2/27/2h1704i0a:47Ms JACKEY, MA ut license from IHS IS0/IEC 18477-7:2017(E) COPYRIGHTPROTECTEDDOCUMENT ISO/IEC2017,PublishedinSwitzerland All rights reserved. Unless otherwise specified, 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 Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org @ IS0/IEC 2017 - All rights reserved by IHS Markit No repro IS0/IEC 18477-7:2017(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references ..1 3 Terms, definitions, symbols and abbreviated terms ..1 4 Conventions ..9 4.1 Conformance language .9 4.2 Operators ..9 4.2.1 Arithmetic operators. ..10 4.2.2 Logical operators 10 4.2.3 Relational operators .10 4.2.4 Precedence order of operators 10 4.2.5 Mathematical functions .11 5 General .11 5.1 Overview .11 5.2 High-level overview on JPEG XT ISO/IEC 18477-7 (informative) .11 5.3 Profiles .13 5.4 Encoder requirements .13 5.5 Decoder requirements. .13 Annex A (normative) Encoding and decoding process .14 Annex B (normative) Boxes ..19 Annex C (normative) Multi-component decorrelation .31 Annex D (normative) Half-exponential output transformation ..32 AnnexE (normative) Profiles .33 Annex F (informative) Implementation guidelines ..43 Bibliography. ..49 iii out license from IHS Not for F