BS ISO/IEC BRITISH STANDARD 14496-19:2004 Information technology Coding of audio-visual objects Part 19: Synthesized texture stream ICS 35.040 BSi NOCOPYINGWITHOUTBSIPERMISSIONEXCEPTASPERMITTEDBYCOPYRIGHTLAW British Standards BSISO/IEC14496-19:2004 National foreword This British Standard reproduces verbatim ISO/IEC 14496-19:2004 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee IST/37, Coding of picture, audio, multimedia and hypermedia information, whichhas theresponsibilityto: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled "International Standards Correspondence Index", or by using the“Search"facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not ofitself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the ISO/IEC title page, pages ii to vii, a blank page, pages 1 to 86, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication This British Standard was published under the authority Amd. No. Date Comments of the Standards Policy and Strategy Committee on 9 July 2004 @BSI 9 July 2004 ISBN058044029X BS IS0/IEC 14496-19:2004 INTERNATIONAL ISO/IEC STANDARD 14496-19 First edition 2004-07-01 Information technology Coding of audio-visual objects Part 19: Synthesized texture stream Technologiesde I'information-Codagedesobjets audiovisuels- Partie 19:Fluxdetexture synthétisé Reference number ISO/IEC 14496-19:2004(E) BS IS0/IEC 14496-19:2004 BSIS0/IEC14496-19:2004 Contents Page Foreword Introduction 1 Scope Normative References ... 3 Synthesized Texture Compression Technology. 3.1 Functionality and Semantics 4 Coding and Bitstream.. .46 4.1 Overview 46 4.2 Global Input Bitstream and Decoding Context 46 4.3 Header Biock ('H') Decoding... .48 4.4 Scene Block ('s') Decoding... 49 4.5 Object Block (c')Decoding.... 50 4.6 Texture Block (A') Decoding ... 51 4.7 Skeleton Decoding.. 73 4.8 Animation Decoding.. 76 Camera Decoding.. 80 4.9 4.10 Quantization 4.11 Sub-Streams. 82 5 SynthesizedTexture Data Stream .... .86 5.1 Structureof the SynthesizedTexture Data Stream 86 5.2 ii BSIS0/IEC14496-19:2004 Foreword Commission) form the specialized system for worldwide standardization. National bodies that are members of ISsO 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 international organizations, governmental technology,ISO and IEC have established a jointtechnical committee, ISO/IEC JTC 1. International Standards are drafted in accordance with the rules given in the ISO/lEC 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 least 75 % of the national bodies casting a vote. ISO/IEC 14496-19 was prepared by Joint Technical Committee