1、 International Telecommunication Union ITU-T T.808TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Amendment 2(08/2007) SERIES T: TERMINALS FOR TELEMATIC SERVICES Still-image compression JPEG 2000 Information technology - JPEG 2000 image coding system: Interactivity tools, APIs and protocols Amendmen
2、t 2: JPIP extensions ITU-T Recommendation T.808 (2005) Amendment 2 ITU-T T-SERIES RECOMMENDATIONS TERMINALS FOR TELEMATIC SERVICES Facsimile Framework T.0T.19 Still-image compression Test charts T.20T.29 Facsimile Group 3 protocols T.30T.39 Colour representation T.40T.49 Character coding T.50T.59 Fa
3、csimile Group 4 protocols T.60T.69 Telematic services Framework T.70T.79 Still-image compression JPEG-1, Bi-level and JBIG T.80T.89 Telematic services ISDN Terminals and protocols T.90T.99 Videotext Framework T.100T.109 Data protocols for multimedia conferencing T.120T.149 Telewriting T.150T.159 Mul
4、timedia and hypermedia framework T.170T.189 Cooperative document handling T.190T.199 Telematic services Interworking T.300T.399 Open document architecture T.400T.429Document transfer and manipulation T.430T.449 Document application profile T.500T.509 Communication application profile T.510T.559 Tele
5、matic services Equipment characteristics T.560T.649 Still-image compression JPEG 2000 T.800T.849 Still-image compression JPEG-1 extensions T.850T.899 For further details, please refer to the list of ITU-T Recommendations. ITU-T Rec. T.808 (2005)/Amd.2 (08/2007) i INTERNATIONAL STANDARD ISO/IEC 15444
6、-9 ITU-T RECOMMENDATION T.808 Information technology JPEG 2000 image coding system: Interactivity tools, APIs and protocols Amendment 2 JPIP extensions Summary This amendment adds a multi-component transformation resolution level flag to JPIP. This is useful for remote browsing of an image that was
7、compressed with a wavelet based multiple-component transform at a sub-resolution in the component direction. As of the approval of this Amendment, ISO/IEC JTC 1/SC 29 was also preparing ITU-T Rec. T.808 (2005) | ISO/IEC 15444-9:2005 Amd.2, which had not progressed to FDAM stage; therefore, it could
8、not be considered for AAP. Since this Amendment on “JPIP extensions“ to ITU-T Rec. T.808 | ISO/IEC 15444-9 was balloted by ISO/IEC JTC 1/SC 29 as PDAM 3, FPDAM 3, FDAM 3, it was kept as for the ITU-T approval process purposes also numbered as Amendment 3, even though Amendment 2 was neither approved
9、 or yet available for consideration under AAP. After approval, in order to keep the temporal numbering approach of the approved Recommendations | International Standards, this Amendment was renumbered as Amendment 2 for publication purpose. Source Amendment 2 to ITU-T Recommendation T.808 (2005) was
10、 approved on 29 August 2007 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 15444-9, Amendment 2. ii ITU-T Rec. T.808 (2005)/Amd.2 (08/2007) FOREWORD The International Telecommunication Union (ITU) is the United Nations
11、 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 view to standardizing telecommunication
12、s 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 Recommendations is covered by the procedure lai
13、d 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 conciseness to indicate both a telecommunica
14、tion 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 Recommendation is achieved when all of these mandat
15、ory 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. INTELLECTUAL PROPERTY RIGHTS ITU draws at
16、tention 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, whether asserted by ITU members or oth
17、ers outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementers are cautioned that this may not represen
18、t the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2008 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. ITU-T Rec. T.808 (2005)/Amd
19、.2 (08/2007) iii CONTENTS Page 1) Clause C.4.7 1 2) Clause C.4.11 1 ISO/IEC 15444-9:2005/Amd.2:2008 (E) ITU-T Rec. T.808 (2005)/Amd.2 (08/2007) 1 INTERNATIONAL STANDARD ITU-T RECOMMENDATION Information technology JPEG 2000 image coding system: Interactivity tools, APIs and protocols Amendment 2 JPIP
20、 extensions 1) Clause C.4.7 Rewrite the second sentence of the paragraph in C.4.7 that reads (with the changes underlined): If the jpm-context parameter appears in a request without a Frame Size request (fsiz) then the Frame Size values fx and fy are set to the page width and page height. If the jpm
21、-context parameter appears in a request without a Region Size request (rsiz) then the Region Size values rx sx and ry sy are set to the frame size values fx and fy (after fx and fy have been set to the page width and height if necessary). 2) Clause C.4.11 Add the following new clause: C.4.11 Multi-c
22、omponent transformation (MCT) Resolution Value mctres = “mctres“ “=“ UINT This field specifies the desired multi-component transformation resolution level. This field is only applicable if for all tile-components, exactly one of the multi-component transformations that are applied on this tile-compo
23、nent (and iteratively on the resulting intermediate components to create generated components) is a multi-component wavelet-transformation. It shall not be used otherwise. If this field is not present, it will be assumed that the full resolution representation of the image data is desired. The full
24、number of resolution levels is one more than the number of wavelet transform levels NLin the multi-component transformation, given by Tmcci(see Table A.39 in ITU-T Rec. T.801 | ISO/IEC 15444-2). For full resolution, this field should be set to 1. For half resolution, the field should be set to 2, fo
25、r quarter resolution, the field should be set to 3, etc. If the value of mctres exceeds NL+ 1 for one tile or codestream, the lowest available resolution of that tile or codestream shall be transmitted. The same value of mctres shall apply simultaneously to all multi-component wavelet transformation
26、s found in the codestream(s). Printed in Switzerland Geneva, 2008 SERIES OF ITU-T RECOMMENDATIONS Series A Organization of the work of ITU-T Series D General tariff principles Series E Overall network operation, telephone service, service operation and human factors Series F Non-telephone telecommun
27、ication services Series G Transmission systems and media, digital systems and networks Series H Audiovisual and multimedia systems Series I Integrated services digital network Series J Cable networks and transmission of television, sound programme and other multimedia signals Series K Protection aga
28、inst interference Series L Construction, installation and protection of cables and other elements of outside plant Series M Telecommunication management, including TMN and network maintenance Series N Maintenance: international sound programme and television transmission circuits Series O Specificat
29、ions of measuring equipment Series P Telephone transmission quality, telephone installations, local line networks Series Q Switching and signalling Series R Telegraph 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
