1、 Reference numberISO/IEC 13818-2:2000/Amd.2:2007(E)ISO/IEC 2007Information technology Generic coding of moving pictures and associated audio information: Video AMENDMENT 2: Support for colour spaces Technologies de linformation Codage gnrique des images animes et du son associ: Donnes vido AMENDEMEN
2、T 2: Prise en charge des espaces chromatiques Amendment 2:2008 toNational Standard of CanadaCAN/CSA-ISO/IEC 13818-2:02Amendment 2:2007 to International Standard ISO/IEC 13818-2:2000 has been adopted without modification(IDT) as Amendment 2:2008 to CSA Standard CAN/CSA-ISO/IEC 13818-2:02. This Amendm
3、ent wasreviewed by the CSA Technical Committee on Information Technology (TCIT) under the jurisdiction of theStrategic Steering Committee on Information Technology and deemed acceptable for use in Canada.September 2008 International Organization for Standardization (ISO), 2007. All rights reserved.
4、International Electrotechnical Commission (IEC), 2007. All rights reserved. NOT FOR RESALE. ISO/IEC 13818-2:2000/Amd.2:2007(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless th
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9、/IEC 2007 All rights reservedISO/IEC 13818-2:2000/Amd.2:2007(E) ISO/IEC 2007 All rights reserved iiiForeword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies tha
10、t are members of ISO or IEC participate in the development of International Standards through technical committees established by the respective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other interna
11、tional organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. International Standards are drafted in accordance with the rules given in
12、 the ISO/IEC Directives, Part 2. The main task of the joint technical committee is to prepare International Standards. Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires approval by at
13、 least 75 % of the national bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights. Amendment 2 to ISO/IEC 13818-2:2000 was pr
14、epared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia information, in collaboration with ITU-T. The identical text is published as ITU-T Rec. H.262 (2000)/Amd.2 (01/2007). This corrected version incorporates
15、 a correction to the edition number on the cover page, replacing “First edition” with “ Second edition”. ISO/IEC 13818-2:2000/Amd.2:2007 (E) ITU-T Rec. H.262 (2000)/Amd.2 (01/2007) 1 INTERNATIONAL STANDARD ITU-T RECOMMENDATION Information technology Generic coding of moving pictures and associated a
16、udio information: Video Amendment 2 Support for colour spaces 1) Subclause 4.1 Add the following definitions at the end of subclause 4.1: Floor() the largest integer less than or equal to the argument. Round() Sign( x ) * Floor( Abs( x ) + 0.5 ), for an argument x 2) Table 6-7 Replace Table 6-7 with
17、: Table 6-7 Colour primaries Value Primaries Informative remarks 0 Forbidden 1 primary x y green 0.300 0.600 blue 0.150 0.060 red 0.640 0.330 white D65 0.3127 0.3290 ITU-R Rec. BT.709-5 ITU-R Rec. BT.1361 conventional colour gamut system or extended colour gamut system IEC 61966-2-4 Society of Motio
18、n Picture and Television Engineers RP 177 Annex B 2 Unspecified Image characteristics are unknown or are determined by the application 3 Reserved For future use by ITU-T | ISO/IEC 4 primary x y green 0.21 0.71 blue 0.14 0.08 red 0.67 0.33 white C 0.310 0.316 ITU-R Rec. BT.470-6 System M (historical)
19、 United States National Television System Committee 1953 Recommendation for transmission standards for colour television United States Federal Communications Commission Title 47 Code of Federal Regulations (2004) 73.682 (a) (20) 5 primary x y green 0.29 0.60 blue 0.15 0.06 red 0.64 0.33 white D65 0.
20、3127 0.3290 ITU-R Rec. BT.1700 625 PAL or 625 SECAM ITU-R Rec. BT.1358 625 ITU-R Rec. BT.470-6 System B, G (historical) ITU-R Rec. BT.601-6 625 6 primary x y green 0.310 0.595 blue 0.155 0.070 red 0.630 0.340 white D65 0.3127 0.3290 ITU-R Rec. BT.1700 NTSC ITU-R Rec. BT.1358 525 Society of Motion Pi
21、cture and Television Engineers 170M (functionally the same as the value 7) ITU-R Rec. BT.601-6 525 ISO/IEC 13818-2:2000/Amd.2:2007 (E) 2 ITU-T Rec. H.262 (2000)/Amd.2 (01/2007) Table 6-7 Colour primaries Value Primaries Informative remarks 7 primary x y green 0.310 0.595 blue 0.155 0.070 red 0.630 0
22、.340 white D65 0.3127 0.3290 Society of Motion Picture and Television Engineers 240M (functionally the same as the value 6) 8-255 Reserved For future use by ITU-T | ISO/IEC 3) Table 6-8 Replace Table 6-8 with: Table 6-8 Transfer characteristics Value Transfer characteristic Informative remarks 0 For
23、bidden 1 V = 1.099 Lc0.45 0.099 for 1 Lc 0.018 V = 4.500 Lcfor 0.018 Lc 0 ITU-R Rec. BT.709-5 ITU-R Rec. BT.1361 conventional colour gamut system (functionally the same as the value 6) 2 Unspecified Image characteristics are unknown or are determined by the application. 3 Reserved For future use by
24、ITU-T | ISO/IEC 4 Assumed display gamma 2.2 ITU-R Rec. BT.470-6 System M (historical) United States National Television System Committee 1953 Recommendation for transmission standards for colour television United States Federal Communications Commission Title 47 Code of Federal Regulations (2004) 73
25、.682 (a) (20) 5 Assumed display gamma 2.8 ITU-R Rec. BT.1700 (2007 Revision) 625 PAL or 625 SECAM ITU-R Rec. BT.470-6 System B, G (historical) 6 V = 1.099 Lc0.45 0.099 for 1 Lc 0.018 V = 4.500 Lcfor 0.018 Lc 0 ITU-R Rec. BT.1700 NTSC ITU-R Rec. BT.1358 525 or 625 Society of Motion Picture and Televi
26、sion Engineers 170M (functionally the same as the value 1) ITU-R Rec. BT.601-6 525 or 625 7 V = 1.1115 Lc0.45 0.1115 for Lc 0.0228 V = 4.0 Lcfor 0.0228 LcSociety of Motion Picture and Television Engineers 240M 8 V = LcLinear transfer characteristics 9 V = 1.0 Log10(Lc) 2 for 1 Lc 0.01 V = 0.0 for 0.
27、01 Lc 0 Logarithmic transfer characteristic (100:1 range) 10 V = 1.0 Log10(Lc) 2.5 for 1 Lc 0.0031622777 V = 0.0 for 0.0031622777 Lc 0 Logarithmic transfer characteristic (316.22777:1 range) ISO/IEC 13818-2:2000/Amd.2:2007 (E) ITU-T Rec. H.262 (2000)/Amd.2 (01/2007) 3 Table 6-8 Transfer characterist
28、ics Value Transfer characteristic Informative remarks 11 V = 1.099 Lc0.45 0.099 for Lc 0.018 V = 4.500 Lcfor 0.018 Lc 0.018 V = (1.099 (Lc)0.45 0.099) for 0.018 LcIEC 61966-2-4 12 V = 1.099 Lc0.45 0.099 for 1.33 Lc 0.018 V = 4.500 Lcfor 0.018 Lc 0.0045 V = (1.099 (4 * Lc)0.450.099) 4 for 0.0045 Lc 0
29、.25 ITU-R Rec. BT.1361 extended colour gamut system 13-255 Reserved For future use by ITU-T | ISO/IEC 4) Subclause 6.3.6 semantics of matrix_coefficients and Table 6-9 Replace semantics of matrix_coefficients and Table 6-9 with: matrix_coefficients This 8-bit integer describes the matrix coefficient
30、s used in deriving luminance and chrominance signals from the green, blue, and red primaries, and is defined in Table 6-9. Table 6-9 Matrix coefficients Value Matrix Informative remarks 0 Forbidden 1 EY= 0.7152 EG+ 0.0722 EB+ 0.2126 EREPB= 0.3854 EG+ 0.5000 EB 0.1146 ER EPR= 0.4542 EG 0.0458 EB+ 0.5
31、000 ERITU-R Rec. BT.709-5 ITU-R Rec. BT.1361 conventional colour gamut system and extended colour gamut system IEC 61966-2-4 xvYCC709 Society of Motion Picture and Television Engineers RP 177 Annex B 2 Unspecified Image characteristics are unknown or are determined by the application 3 Reserved For
32、future use by ITU-T | ISO/IEC 4 EY= 0.59 EG+ 0.11 EB+ 0.30 EREPB= 0.331 EG+ 0.500 EB 0.169 EREPR= 0.421 EG 0.079 EB+ 0.500 ERUnited States National Television System Committee 1953 Recommendation for transmission standards for colour television United States Federal Communications Commission Title 4
33、7 Code of Federal Regulations (2004) 73.682 (a) (20) 5 EY= 0.5870 EG+ 0.1140 EB+ 0.2990 EREPB= 0.3313 EG+ 0.5000 EB 0.1687 EREPR= 0.4187 EG 0.0813 EB+ 0.5000 ERITU-R Rec. BT.1700 625 PAL or 625 SECAM ITU-R Rec. BT.1358 625 IEC 61966-2-4 xvYCC601ITU-R Rec. BT.470-6 System B, G (historical) (functiona
34、lly the same as the value 6) ITU-R Rec. BT.601-6 625 6 EY= 0.5870 EG+ 0.1140 EB+ 0.2990 EREPB= 0.3313 EG+ 0.5000 EB 0.1687 EREPR= 0.4187 EG 0.0813 EB+ 0.5000 ERITU-R Rec. BT.1700 NTSC ITU-R Rec. BT.1358 525 Society of Motion Picture and Television Engineers 170M IEC 61966-2-4 xvYCC601 (functionally
35、the same as the value 5) ITU-R Rec. BT.601-6 525 ISO/IEC 13818-2:2000/Amd.2:2007 (E) 4 ITU-T Rec. H.262 (2000)/Amd.2 (01/2007) Table 6-9 Matrix coefficients Value Matrix Informative remarks 7 EY= 0.701 EG+ 0.087 EB+ 0.212 EREPB= 0.384 EG+ 0.500 EB 0.116 EREPR= 0.445 EG 0.055 EB+ 0.500 ERSociety of M
36、otion Picture and Television Engineers 240M 8 YCgCo Defined as specified below 9-255 Reserved For future use by ITU-T | ISO/IEC In Table 6-9: When transfer_characteristics is not equal to 11 or 12, ER,EGand EB are analog with values between 0 and 1; When transfer_characteristics is equal to 11 (IEC
37、61966-2-4) or 12 (ITU-R Rec. BT.1361 extended colour gamut system), ER,EGand EB are analog with a larger range not specified in this Recommendation | International Standard; Nominal black is considered to have the property ER= 0,EG= 0 and EB= 0; Nominal white is considered to have the property ER= 1
38、,EG= 1 and EB= 1; If matrix_coefficients is not equal to 8, the following applies: EYis analog with the value 0 associated with nominal black and the value 1 associated with nominal white; EPBand EPRare analog with the value 0 associated with both nominal black and nominal white; When transfer_chara
39、cteristics is not equal to 11 or 12, EYhas values between 0 and 1; When transfer_characteristics is not equal to 11 or 12, EPBand EPRhave values between 0.5 and 0.5; When transfer_characteristics is equal to 11 (IEC 61966-2-4), or 12 (ITU-R Rec. BT.1361 extended colour gamut system), EY, EPBand EPRa
40、re analog with a larger range not specified in this Recommendation | International Standard; Y, Cb and Cr are related to EY, EPBand EPRby the following formulae: Y = max 0, min 255, Round( ( 219 * EY) ) + 16 Cb = max 0, min 255, Round( ( 224 * EPB) ) + 128 Cr = max 0, min 255, Round( ( 224 * EPR) )
41、+ 128 Otherwise (matrix_coefficients is equal to 8 (YCgCo), the following applies: R = 219 * ER+ 16 G = 219 * EG+ 16 B = 219 * EB+ 16 Y = max 0, min 255, Round( 0.5 * G + 0.25 * ( R + B ) ) Cb = max 0, min 255, Round( 0.5 * G 0.25 * ( R + B ) ) + 128 Cr = max 0, min 255, Round( 0.5 * (R B ) ) + 128
42、NOTE 1 For purposes of the YCgCo nomenclature used in Table 6-9, Cb and Cr of the above equations may be referred to as Cg and Co, respectively. The inverse conversion for the above three equations should be computed as: t = Y ( Cb 128 ) G = Y + ( Cb 128 ) B = t ( Cr 128 ) R = t + ( Cr 128 ) NOTE 2
43、The decoding process given by this Recommendation | International Standard limits output sample values for Y, Cr and Cb to the range 0:255. Thus, sample values outside the range implied by the above equations may occasionally occur at the output of the decoding process. In particular the sample valu
44、es 0 and 255 may occur. ISO/IEC 13818-2:2000/Amd.2:2007 (E) ITU-T Rec. H.262 (2000)/Amd.2 (01/2007) 5 In the case that sequence_display_extension() is not present in the bitstream or colour_description is zero the matrix coefficients are assumed to be implicitly defined by the application. NOTE 3 In
45、 applications which may have signals with more than one set of colour primaries, transfer characteristics, and/or matrix coefficients, it is recommended to transmit a sequence display extension with colour_description set to one, and to specify the appropriate values for the colorimetry parameters.
46、ISO/IEC 13818-2:2000/Amd.2:2007(E) ICS 35.040 ISO/IEC 2007 All rights reserved Copyright NoticeThis Amendment to the International Standard contains information copyright protected by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). Ex
47、cept as permitted under the laws of Canada, no extract of this Amendment to the International Standard may be reproduced, stored in any retrieval system, or transmitted in any form or by any means, electronic, photocopying, recording, or otherwise, without prior permission from the Standards Council
48、 of Canada (SCC). Requests for permission to reproduce this Amendment to the International Standard or parts thereof should be addressed to Manager, Technical Document Centre Standards Council of Canada 270 Albert Street, Suite 200 Ottawa, Ontario K1P 6N7 The Canadian adoption of this Amendment to the International Standard contains information copyright protected by the Canadian Standards Association. All rights reserved. No part of this adopted Amendment may be reproduced in any form whatsoever without the prior permission of the publisher. ISO/IECmaterial is reprinted with permission.
