多媒體通信系統(tǒng)

前言

The past years have seen an explosion in the use of digital media. Industry is making signifi cant investments to deliver digital audio, image and video information to consumers andcustomers. A new infrastructure of digital audio, image and video recorders and players; onlineservices and electronic commerce is rapidly being deployed. At the same time, major rpora-tions are converting their audio, image and video archives to an electronic form. Digital mediaoffer several distinct advantages over analog media. The quality of digital audio, image and videosignals is higher than that of their analog counterparts. Editing is easy because one can access theexact discrete locations that need to be changed. Copying is simple with no loss of fidelity. A copyof digital media is identical to the original. Digital audio, image and video are easily transmittedacross networked information systems. These advantages have opened up many new possibilities.Multimedia consists of Multimedia data + Set of interactions. Multi-media data is informally considered as the collection of three Ms: multisource, multitype andmultiformat data. The interactions among the multimedia components consist of complex rela-tionships without which multimedia would be a simple set of visual, audio and other data.Multimedia and multimedia communication can be globally viewed as a hierarchical sys-tem. The multimedia software and applications provide a direct interactive environment forusers. When a computer requires information from remote computers or servers, multimediainformation must travel through computer networks. Because the amount of informationinvolved in the transmission of video and audio can be substantial, the multimedia informationmust be compressed before it can be sent through the network in order to reduce the communi-cation delay. Constraints, such as limited delay and jitter, are used to ensure a reasonable videoand audio effect at the receiving end. Therefore, communication networks are undergoing con-stant improvements in order to provide for multimedia communication capabilities.

內(nèi)容概要

本書首先介紹了多媒體通信的基本元素、數(shù)字視頻、信號(hào)處理的基本方法，各類多媒體通信網(wǎng)絡(luò)及協(xié)議，并重點(diǎn)介紹了多媒體通信的一系列國(guó)際標(biāo)準(zhǔn)。該書的特點(diǎn)是對(duì)近年新涌現(xiàn)的新技術(shù)、新標(biāo)準(zhǔn)介紹得較全面與細(xì)致，但同時(shí)又不失基本的原理。本書可作為通信、計(jì)算機(jī)、電子等專業(yè)的本科或研究生教材，也適合從事相關(guān)專業(yè)的工程師作為參考使用。

作者簡(jiǎn)介

作者：(美國(guó))拉奧 (K.R.Rao) (美國(guó))博伊科維奇 (Zoran S.Bojkovic) (美國(guó))米洛瓦諾維奇 (Dragorad A.Milovanovic) K. R. Rao, is Professor of Electrical Engineering at the University of Texasat Arlington. He has authored or co-authored several additional leading textsin the field, including Techniques and Standards for Image/Video/AudioCoding, and Packet Video Communications over ATM Networks (PrenticeHall). In 1975, with two other researchers, he introduced the iscreteCosine Transform, one of today's most powerful digital signal processingtechniques. He is a Fellow of the IEEE.Zoran S. Bojkovic, received his Ph.D. degree in electrical engineeringfrom the University of Belgrade, Yugoslavia, Faculty of Electrical Engi-neering. He is currently a professor of electrical engineering at the Univer-sity of Belgrade. He has taught a wide range of courses in communicationnetworks and signal processing and supervised postgraduate tudentsworldwide. He has published 15 textbooks and more than 300 papers ininternational books, in peer-reviewed journals and conference proceedings. He is also an active reviewer and a member of the Scientific committee of numerous journals and conferences, and serves as chairman for international conferences,symposiums and workshops. He has conducted workshops/tutorials on multimedia worldwideand participated in many communication, scientific, and industrial projects. He is a member ofIEEE Communication Society and EURASIP.Dragorad A. Milovanovic, received the Dipl. Electr. Eng. and Master ofScience degree from the University of Belgrade, Yugoslavia Faculty ofEngineering. From 1987 to 1991, he was a Research Assistant at theDepartment of Electrical ngineering, where his research interest includesanalysis and design of digital communications systems. He has beenworking as R&D engineer for DSP software development in digital television industry. Also, he is serving as a consultant for developing standardbased and secure solutions for media coding, streaming and distribution.He has participated in numerous scientific projects and published more than 150 papers in international journals and conference proceedings.

書籍目錄

RrefaceAcknowledgmentsList of AcronynsChapter1　Multinedia Communications　1.1 lntroduction　1.2 Multimedia Communication Model　1.3 Eiements lf Multimedia Systens　1.4 User Repuirements　1.5　Network Repuirements　1.6　Pacdket Transfer Conept　1.7　Multimedia Repuirements and ATN Networkd　1.8　Multimedia Terminals　1.9　Concludyng RemarksChapter2　Audio-Visual lntegration　2.1　lntroduction　2.2　Media lnteraction　2.3　Bimodality of Human Speech　2.4　Lip Reading　2.5　Speech-Driven Talking Heads　2.6　Lip Synchronization　2.7　Lip Tracking　2.8　Audio-Visual Mapping　　2.8.1　Classification-Baced Conversion　　2.8.2　HMM for Audio-to-Visual Conversion　　2.8.3　Audio and Visual ontegration for Lip-Reading Applications　　2.8.4　Audio-Visual onformation Preprocessing　　2.8.5　Pattern-Recogmition Strategies　　2.8.6　lntegration Strategy　2.9　Bimodal Person Verification　2.10　Joint Arkio-Video Coding　2.11　Concluding RemarksChapter3　Multimedia Processing in Communications　3.1　Introduction　3.2　Digital Media　3.3　Signal-Processing Elements　3.4　Challenges of Multinedia Intormation Processing　　3.4.1　Pre and Poctprocessing　　3.4.2　Speech,Audio and Acoustic Processing for Multimedia　　3.4.3　Video Sigmal Processing　　3.4.4　Content-Baced Image Retrieval　　　　　　Texture-Baces Methods　　　　　　Shape-Baced Methods　　　　　　Color-Based Methods　3.5　Perceptual Coding of Digital Audio Signals　　3.5.1　General Perceptual Audio-Coding Architecture　　3.5.2　Review of Psychoacoustic Fundamentals　　　　　Absolute Threshold lf Hearing　　　　　　Critical Band Frepuency Analysis　　　　　　Simultaneous Maskung and the Spread of Madking　　　　　　Temporal Masking　　　　　　PE　3.6　Transform Audio Coders　　3.6.1　Optimum Coding in the Frepuency Domain　　3.6.2　Perceptual Transform Coder　　3.6.3　Hybrid Coder　　3.6.4　Transform Coding Using DFT Interblock Redundancy　　3.6.5　ADPEC　　3.6.6　Differential Perceptual SAudio Coder　　3.6.7　DFT Noise Substitution　　3.6.8　DCT with Vector Quantization　　3.6.9　MDCT　　3.6.10　MDCT with VQ　3.7　Audio Subband Coders　　3.7.1　Wavelet Decompositions　　3.7.2　DWT-based Subbnd Coders　3.8　Speech Coder Attributes　……Chapter4　Distributes Multimedia SystemsChapter5　Multimedia Communication StandardsChapter6　Multimedia Communications Across NetworksReferencesIndexAbout the Authors

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