TECHNICAL ISO/IEC REPORT TR 14496-7 Second edition 2004-10-15 Information technology Coding of audio-visual objects Part 7: Optimized reference software for coding of audio-visual objects Technologies de I'information - Codage des objets audiovisuels - Partie 7: Logiciel de reference optimisé pour le codage des objets audiovisuels Reference number ISO/IEC TR 14496-7:2004(E) ISO IEC @ ISO/IEC 2004 Copyright International Organization for Standardization Not for Resale ISO/IEC TR 14496-7:2004(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ?ISO/IEC2004 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, IsO's member body in the country of the requester. ISO copyright office Case postale 56. CH-1211 Geneva 20 Tel. + 4122 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland yhematinaganzainfandardizatio @ ISO/IEC 2004 - All rights reserved vithout license from IHS Not for Resale ISO/IEC TR 14496-7:2004(E) Contents Page Foreword iv Introduction 1 Scope. 2 Fast Motion Estimation.. 2.1 Introduction to Motion Adaptive Fast Motion Estimation. 2.2 Technical Description of Core Technology MVFAST 2.2.1 Detection of stationary blocks.... 2.2.2 Determination of locai motion activity... 2.2.3 Search Center.... 2.2.4 Search Strategy.. 2.2.5 Perspectives on implementing MVFAST. 2.2.6 Special Acknowledgements... 2.3 Technical Description of PMVFAST 2.3.1 Introduction. 2.3.2 Technical Description of PMVFAST 2.3.3 SpecialAcknowledgement.. 2.4 Conclusions.... 3 Fast Global Motion Estimation .... 3.1 Introduction to Feature-based Fast and Robust Global Motion Estimation Technique.... 8 3.2 TechnicalDescriptionofFFRGMET.. 3.2.1 Outlier Exclusion... 3.2.2 Robust Object Function 9 3.2.3 Feature Selection . 10 3.2.4 Algorithm Description .. 10 3.2.5 Perspectives on implementing FFRGMET 3.2.6 Special .Acknowledgements..... 3.3 Conclusions... 4 11 4.1 Introduction to Fast and Robust Sprite Generation . 11 4.2 Algorithm Description ... 11 4.2.1 Outline of Algorithm. 4.2.2 Image Region Division.... 4.2.3 FastandRobustMotionEstimation... 13 4.2.4 Image Segmentation ... 14 4.2.5 Image Blending ... 14 4.3 Conclusions...... 15 5 Optimised Reference Software For Simple Profile and Error Resilience Tools .... 15 5.1 15 5.2 Integration and Optimization of the Reference Software.. 15 5.2.1 Introduction ... 15 5.2.2 Removaloftheunusedprocedures,parameters,anddatastructures.... 16 5.2.3 Revisionofthecodebasesforsavingtheexecutiontimeandcodesizes. 16 5.2.4 Use of the existing fast algorithms for the computational burden modules ... 21 5.2.5 OptimisedSimpleProfile encoderanddecoder............... 25 5.2.6 Experimental Results.... 5.3 ErrorResilienceTools.. 29 5.3.1 Abbreviations 29 5.3.2 New Processing /functionalities 29 6 ContactInformation. 31 Bibliography . 32 Copyrigh International Organization for standardization All rights reserved ili se from IHS Not for Resale ISO/IEC TR 14496-7:2004(E) Foreword Commission) form the specialized system for worldwide standardization. National bodies that are members of Iso or IEC participate in the development of International Standards through technical committees established by the respective organ