JEC IEC 62906-6-1 Edition 1.02025-06 INTERNATIONAL STANDARD Laserdisplays Part 6-1: Visualization method of colour gamut intersection IEC 62906-6-1:2025-06(en) ICS 31.260 ISBN 978-2-8327-0448-6 THISPUBLICATIONISCOPYRIGHTPROTECTED Copyright@2025IEC,Geneva,Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or your local IEC member National Committee for further information. IEC Secretariat Tel.: +41 22 919 02 11 3, rue de Varembé [email protected] www.iec.ch CH-1211 Geneva 20 Switzerland About the IEC The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes AboutIECpublications The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the latest IECpublications search IEC Products & Services Portal- products.iec.ch webstore.iec.ch/advsearchform Discover our powerful search engine and read freely all the The advanced search enables to find IEC publications by publications previews, graphical symbols and the glossary. a variety ofcriteria (reference number, text, With a subscription you willalways have access to up to technical committee,_..),It also gives information on date content tailored to your needs. projects, replaced and withdrawn publications. Electropedia - www.electropedia.org IEc Just Published - webstore.iec.ch/justpublished The world's leading online dictionary on electrotechnology. Stay up to date on all new IEC publications. Just Published details all new publications released. Available online and and French, with equivalent terms in 25 additional languages. once a month by email. Also known as the International Electrotechnical Vocabulary (IEV) online. IEcCustomerServiceCentre-webstore.iec.ch/csc If you wish to give us your feedback on this publication or need further assistance, please contact the C Customer Service Centre: [email protected]. Warning! Make sure that you obtained this publication from an authorized distributor. IEC62906-6-1:2025IEC2025 2 - CONTENTS FOREWORD 3 INTRODUCTION... .5 Scope. 1 .6 2 Normative references. .6 3 Terms, definitions, and abbreviated terms 6 3.1 Terms and definitions.. 3.2 Abbreviated terms.... 4 Standard measuring equipment... 5 Standard measuring conditions 6 Gamut ring... .8 7 Algorithm for gamut ring intersection.. 8 Visualization method. Annex A (informative) Calculation method for CIELAB gamut rings and intersection .... .....14 A.1 Purpose.. ...14 A.2 Procedure for calculating the CIELAB gamut rings plot and CIELAB gamut ring intersection plot... A.3 Vector intersection method for CIELAB gamut intersection and gamut rings calculation. 15 A.3.1 General .. A.3.2 Vector intersection method.. .15 A.3.3 Reference algorithm implementation.. .18 Annex B (informative) Reference colour gamut data .. Bibliography ..36 Figure 1 - Gamut rings of BT.2020 colour gamut... Figure 2 - CIELAB colour gamut of a laser display .. Figure 3- Gamut rings of the laser display with dotted line denoting the outline of the BT.2020 gamut rings (L* = 100 ring).... Figure 4 - Framework of gamut ring intersection using DCI-P3 gamut (GDCI) intersection with BT.2020 gamut (G2020) 12 Figure 5 - Gamut ring intersection (coloured) between the display (DUT) and BT.2020 (REF, greyscale)..... Figure A.1-Flowchart for CIELAB colour gamut measurement and gamut ring calculation... Table B.1 - xy chromaticity coordinates of the RGB primaries and white of BT.2020, BT.709, DCI-P3, and Adobe RGB. 24 -3 - IEC62906-6-1:2025@IEC2025 INTERNATIONALELECTROTECHNICALCOMMISSION LASERDISPLAYS- Part 6-1