1、 INTERNATIONAL STANDARD IEC61966-2-4 First edition2006-01 Multimedia systems and equipment Colour measurement and management Part 2-4:Colour management Extended-gamut YCC colour space for video applications xvYCC Reference number IEC 61966-2-4:2006(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR IN
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8、Centre:Email:custserviec.ch Tel:+41 22 919 02 11 Fax:+41 22 919 03 00 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.INTERNATIONAL STANDARD IEC61966-2-4 First edition2006-01 Multimedia systems and equipment Colour measurement and mana
9、gement Part 2-4:Colour management Extended-gamut YCC colour space for video applications xvYCC IEC 2006 Copyright-all rights reserved 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
10、 in writing from the publisher.International Electrotechnical Commission,3,rue de Varemb,PO Box 131,CH-1211 Geneva 20,SwitzerlandTelephone:+41 22 919 02 11 Telefax:+41 22 919 03 00 E-mail:inmailiec.ch Web:www.iec.ch R For price,see current cataloguePRICE CODE Commission Electrotechnique Internationa
11、leInternational Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 61966-2-4 IEC:2006(E)CONTENTS FOREWORD.3 INTRODUCTION.5 1 Scope.6 2 Normative references.6 3 Terms and definitions.6 4 Colorimetric parameter
12、s and related characteristics.7 4.1 Primary colours and reference white.7 4.2 Opto-electronic transfer characteristics.7 4.3 YCC(luma-chroma-chroma)encoding methods.8 4.4 Digital quantization methods.8 5 Encoding transformations.9 5.1 Introduction.9 5.2 Transformation from xvYCC values to CIE 1931 X
13、YZ values.9 5.3 Transformation from CIE 1931 XYZ values to xvYCC values.11 Annex A(informative)Compression of specular components of Y signals.13 Annex B(informative)Default transformation from 16-bit scRGB values to xvYCC values.14 Annex C(informative)xvYCC/ITU-R BT.709 and sYCC/sRGB compatibility.
14、16 Bibliography.18 Figure A.1 Example of the specular compression method.13 Figure C.1 Relationship between ITU-R BT.709 and sRGB.16 Figure C.2 Relationship between xvYCC and sYCC.17 Table 1 CIE chromaticities for reference primary colours and reference white.7 .LICENSED TO MECON Limited.-RANCHI/BAN
15、GALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.61966-2-4 IEC:2006(E)3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ MULTIMEDIA SYSTEMS AND EQUIPMENT COLOUR MEASUREMENT AND MANAGEMENT Part 2-4:Colour management Extended-gamut YCC colour space for video applications xvYCC FO
16、REWORD 1)The International Electrotechnical Commission(IEC)is a worldwide organization for standardization comprising all national electrotechnical committees(IEC National Committees).The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields.To this end and in addition to other activities,IEC publishes International Standards,Technical Specifications,Technical Reports,Publicly Available Specifications(PAS)and Gu
