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MULTIMEDIA – A MULTIDISCIPLINARY APPROACH TO COMPLEX ISSUES Edited by Ioannis Karydis Multimedia – A Multidisciplinary Approach to Complex Issues Edited by Ioannis Karydis Published by InTech Janeza Trdine 9, 51000 Rijeka, Croatia Copyright © 2012 InTech All chapters are Open Access distributed under the Creative Commons Attribution 3.0 license, which allows users to download, copy and build upon published articles even for commercial purposes, as long as the author and publisher are properly credited, which ensures maximum dissemination and a wider impact of our publications. After this work has been published by InTech, authors have the right to republish it, in whole or part, in any publication of which they are the author, and to make other personal use of the work. Any republication, referencing or personal use of the work must explicitly identify the original source. As for readers, this license allows users to download, copy and build upon published chapters even for commercial purposes, as long as the author and publisher are properly credited, which ensures maximum dissemination and a wider impact of our publications. Notice Statements and opinions expressed in the chapters are these of the individual contributors and not necessarily those of the editors or publisher. No responsibility is accepted for the accuracy of information contained in the published chapters. The publisher assumes no responsibility for any damage or injury to persons or property arising out of the use of any materials, instructions, methods or ideas contained in the book. Publishing Process Manager Daria Nahtigal Technical Editor Teodora Smiljanic Cover Designer InTech Design Team First published February, 2012 Printed in Croatia A free online edition of this book is available at www.intechopen.com Additional hard copies can be obtained from [email protected] Multimedia – A Multidisciplinary Approach to Complex Issues, Edited by Ioannis Karydis p. cm. ISBN 978-953-51-0216-8 Contents Preface IX Part 1 Multimedia and Peer-to-Peer Networks 1 Chapter 1 Peer-to-Peer Multimedia Distribution on Radio Channel and Asymmetric Channel 3 Danilo Merlanti and Gianluca Mazzini Part 2 Multimedia and Wireless Networks 27 Chapter 2 A Dynamic Link Adaptation for Multimedia Quality-Based Communications in IEEE_802.11 Wireless Networks 29 Ahmed Riadh Rebai and Mariam Fliss Chapter 3 A Multimedia and VoIP-Oriented Cell Search Technique for the IEEE 802.11 WLANS 55 Ahmed Riadh Rebai, Mariam Fliss and Saïd Hanafi Part 3 Security Issues in Multimedia 83 Chapter 4 A Novel Access Control Scheme for Multimedia Content with Modified Hash Chain 85 Shoko Imaizumi, Masaaki Fujiyoshi and Hitoshi Kiya Chapter 5 Multimedia Security: A Survey of Chaos-Based Encryption Technology 99 Zhaopin Su, Guofu Zhang and Jianguo Jiang Chapter 6 Polynomial-Time Codes Against Averaging Attack for Multimedia Fingerprinting 125 Hideki Yagi and Tsutomu Kawabata Chapter 7 Evaluation of Multimedia Fingerprinting Image 141 Kang Hyeon RHEE VI Contents Part 4 Bridging the Semantic Gap in Multimedia 159 Chapter 8 Enhancing Multimedia Search Using Human Motion 161 Kevin Adistambha, Stephen Davis, Christian Ritz, Ian S. Burnett and David Stirling Chapter 9 Ensemble Learning with LDA Topic Models for Visual Concept Detection 175 Sheng Tang, Yan-Tao Zheng, Gang Cao, Yong-Dong Zhang and Jin-Tao Li Part 5 Managing Multimedia Content and Metadata 201 Chapter 10 Mconf: An Open Source Multiconference System for Web and Mobile Devices 203 Valter Roesler, Felipe Cecagno, Leonardo Crauss Daronco and Fred Dixon Chapter 11 High-Dimensional Indexing for Video Retrieval 229 Catalin Calistru, Cristina Ribeiro and Gabriel David Chapter 12 Challenges and the Solutions for Multimedia Metadata Sharing in Networks 263 Hochul Shin Preface Multimedia is interdisciplinary a field by nature. One can identify principles, concepts and theories from communication and computer science, physics, psychology, music, graphic arts and many other disciplines in such data [Tannenbaum, 1999]. In addition, multimedia are renowned for their rich character, stemming from their formation based on combination of different content forms. The widespread penetration of digital capturing and processing devices and the high bandwidth interconnections between web-users, coupled with the aforementioned multidisciplinary and rich character of multimedia, led their use to be a sine qua non in many forms of digitised expression. Setting aside the enormous expansion of use of multimedia content in web pages under the auspices of Web 2.0, the most prominent example of the ever-increasing use of multimedia comes from socially aware and contextually rich video streaming services. In both terms of creating and consuming such content, YouTube service [YouTube, 2012] states that "48 hours of video are uploaded every minute, resulting in nearly 8 years of content uploaded every day, while over 3 billion videos are viewed a day". Although research in the discipline of multimedia is far from young, such growth of multimedia content creation and consumption is unprecedented and calls for new methods in order to ensure efficiency and effectiveness of the methods utilised. In addition, latest developments in terms of hardware, networking issues, security and semantic information extraction require re-evaluation of the currently used techniques to suit new requirements. This book is organised into 5 major sections addressing multimedia topics in peer-to- peer & wireless networks, security characteristics in multimedia, semantic gap bridging for multimedia content and novel applications for managing multimedia content & metadata. Ioannis Karydis Dept. of Informatics, Ionian University Greece X Preface References Tannenbaum, R. S. (1999). Theoretical Foundations of Multimedia. W. H. Freeman. YouTube. (2012). YouTube Statistics. Available: http://www.youtube.com/t/press_statistics. Last accessed 19th Jan 2012.