1、 International Telecommunication Union ITU-T T.800TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Amendment 1(09/2005) SERIES T: TERMINALS FOR TELEMATIC SERVICES Information technology JPEG 2000 image coding system: Core coding system Amendment 1: Profiles for digital cinema applications ITU-T Recom
2、mendation T.800 (2002) Amendment 1 ITU-T Rec. T.800 (2002)/Amd.1 (09/2005) i INTERNATIONAL STANDARD ISO/IEC 15444-1 ITU-T RECOMMENDATION T.800 Information technology JPEG 2000 image coding system: Core coding system Amendment 1 Profiles for digital cinema applications Summary The purpose of this Rec
3、ommendation | International Standard is to provide two additional profiles to ISO/IEC 15444-1:2004 for digital cinema applications. The first new profile describes codestream restrictions for 2K motion pictures, while the second profile describes codestream restrictions for 4K motion pictures. 2K mo
4、tion pictures are characterized by a maximum frame size of 2048 1080, while 4K motion pictures are characterized by a maximum frame size of 4096 2160. The two profiles are necessary to limit the scope of decoder implementations for motion picture distribution and exhibition. Source Amendment 1 to IT
5、U-T Recommendation T.800 (2002) was approved on 13 September 2005 by ITU-T Study Group 16 (2005-2008) under the ITU-T Recommendation A.8 procedure. An identical text is also published as ISO/IEC 15444-1, Amendment 1. ii ITU-T Rec. T.800 (2002)/Amd.1 (09/2005) FOREWORD The International Telecommunica
6、tion Union (ITU) is the United Nations specialized agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a v
7、iew to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommend
8、ations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for concis
9、eness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure e.g. interoperability or applicability) and compliance with the Recommendatio
10、n is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INT
11、ELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights,
12、whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementors are ca
13、utioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database. ITU 2005 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. ISO/IEC 15444-1:2004/Amd.
14、1:2005 (E) ITU-T Rec. T.800 (2002)/Amd.1 (09/2005) 1 INTERNATIONAL STANDARD ITU-T RECOMMENDATION Information technology JPEG 2000 image coding system: Core coding system Amendment 1 Profiles for digital cinema applications Annex A a) Delete the following sentence from the first paragraph of subclaus
15、e A.10: “Codestream Restrictions“ have two profiles, Profile-0 and Profile-1. b) Add the following at the end of Annex A (i.e., immediately following Table A.45): A.10.1 Codestream restrictions for digital cinema In addition to Profile-0 and Profile-1, two profiles are defined for digital cinema app
16、lications. These profiles are Profile-3 and Profile-4, and are detailed in Table A.46. Table A.46 Codestream restrictions for digital cinema applications 2K digital cinema profile 4K digital cinema profile SIZ marker segment Profile Indication Rsiz = 3 Rsiz = 4 Image size Xsiz 2048, Ysiz 1080 Xsiz 4
17、096, Ysiz 2160 Tiles One tile for the whole image: YTsiz + YTOsiz Ysiz XTsiz + XTOsiz Xsiz Same Image and tile origin XOsiz = YOsiz = XTOsiz = YTOsiz = 0 Same Sub-sampling XRsizi = YRsizi = 1 Same Number of components Csiz = 3 Same Bit depth Ssizi= 11 (i.e., 12-bit unsigned) Same RGN marker segment
18、Disallowed, i.e., no region of interest Same Marker locations Packed headers (PPM, PPT) Disallowed Same COD, COC, QCD, QCC Main header only Same COD/COC marker segments Number of decomposition levels NL 5 Every component of every image of a distribution shall have the same number of wavelet transfor
19、m levels. 1 NL 6 Every component of every image of a distribution shall have the same number of wavelet transform levels. Number of layers Shall be exactly 1 Same Code-block size xcb = ycb = 5 Same Code-block style SPcod, SPcoc = 0000 0000 Same Precinct size PPx = PPy = 7 for NLLL band, else 8 Same
20、ISO/IEC 15444-1:2004/Amd.1:2005 (E) 2 ITU-T Rec. T.800 (2002)/Amd.1 (09/2005) Table A.46 Codestream restrictions for digital cinema applications 2K digital cinema profile 4K digital cinema profile Progression order CPRL, POC marker disallowed There shall be exactly one POC marker segment in the main
21、 header. Other POC marker segments are disallowed. The POC marker segment shall specify exactly two progressions having the following parameters: a) First progression: RSpoc = 0, CSpoc = 0, LYEpoc = 1, REpoc = NL, CEpoc = 3, Ppoc = 4 b) Second progression: RSpoc = NL, CSpoc = 0, LYEpoc = 1, REpoc =
22、NL+ 1, CEpoc = 3, Ppoc = 4 Tile-parts Each compressed image shall have exactly 3 tile parts. Each tile part shall contain all data from one color component Each compressed image shall have exactly 6 tile parts. Each of the first 3 tile parts shall contain all data necessary to decompress one 2K colo
23、r component. Each of the next 3 tile parts shall contain all additional data necessary to decompress one 4K color component. The resulting codestream structure is diagramed in Figure A.25. Tile-part lengths TLM marker segments are required in each image Same Application specific restrictions Max com
24、pressed bytes for any image frame (aggregate of all 3 color components) 1302083 bytes for 24 fps 651041 bytes for 48 fps 1302083 bytes (for 24 fps) Max compressed bytes for any single color component of an image frame 1041666 bytes for 24 fps 520833 bytes for 48 fps 1041666 bytes for 2K portion of e
25、ach component (for 24 fps) Main header Tile-part header 2K_0 Tile-part header 2K_1 Tile-part header 2K_2 Tile-part header 4K_0 Tile-part header 4K_1 Tile-part header 4K_2 Figure A.25 4K tile parts Assuming NLwavelet transform levels (NL + 1 resolutions), the rectangle labelled 2K_i (i = 0, 1, 2) con
26、tains all packets for color component i, resolutions 0 through NL 1. The rectangle labelled 4K_i (i = 0, 1, 2) contains all packets for color component i, resolution NL. Printed in Switzerland Geneva, 2005 SERIES OF ITU-T RECOMMENDATIONS Series A Organization of the work of ITU-T Series D General ta
27、riff principles Series E Overall network operation, telephone service, service operation and human factors Series F Non-telephone telecommunication services Series G Transmission systems and media, digital systems and networks Series H Audiovisual and multimedia systems Series I Integrated services
28、digital network Series J Cable networks and transmission of television, sound programme and other multimedia signals Series K Protection against interference Series L Construction, installation and protection of cables and other elements of outside plant Series M Telecommunication management, includ
29、ing TMN and network maintenance Series N Maintenance: international sound programme and television transmission circuits Series O Specifications of measuring equipment Series P Telephone transmission quality, telephone installations, local line networks Series Q Switching and signalling Series R Tel
30、egraph transmission Series S Telegraph services terminal equipment Series T Terminals for telematic services Series U Telegraph switching Series V Data communication over the telephone network Series X Data networks, open system communications and security Series Y Global information infrastructure, Internet protocol aspects and next-generation networks Series Z Languages and general software aspects for telecommunication systems
