[...]... video coding are further described, mostly to do with 3D scalable video coding applications Applications and scenarios for the scalable coding systems, advances in scalable video coding for 3D video applications, a non-standardized scalable 2D model-based video coding scheme applied on the Visual Media Coding and Transmission Ahmet Kondoz © 2009 John Wiley & Sons, Ltd ISBN: 97 8-0 -4 7 0-7 405 7-6 2 Visual Media. .. inefficient to simply compress a video signal as a series of images Visual Media Coding and Transmission Ahmet Kondoz © 2009 John Wiley & Sons, Ltd ISBN: 97 8-0 -4 7 0-7 405 7-6 8 Visual Media Coding and Transmission Figure 2.1 Spatial redundancy is present in areas of an image or video frame where the pixel values are very similar Source -coding redundancy is present if the symbols produced by the video codec... data than high-frequency data In addition, luminance information is more important than chrominance information Common features of image/video signals: Figure 2.4 shows an image that has been high-pass and low-pass filtered It is clear from the images that the low-pass-filtered version contains more energy and more useful information than the high-pass-filtered one 10 Visual Media Coding and Transmission. .. quality-of-service (QoS) requirements and enforce conflicting constraints on the communication networks Still picture and text data are categorized as background services and require high data rates but have no constraints on 4 Visual Media Coding and Transmission the transmission delay Voice services, on the other hand, are characterized by low delay However, they can be coded using fixed low-rate algorithms... transform-based multi-view coding Having detailed the latest work in visual media coding, the networking aspects of video communication are presented in the second part of the book Various wireless channel models are presented, to form the basis for following chapters Both link-level quality of service (QoS) and cross-network transmission of compressed visual data are considered Finally, context-based visual. .. 97 8-0 -4 7 0-7 405 7-6 2 Visual Media Coding and Transmission texture, and depth coding of 3D video are all discussed A scalable, multiple description coding (MDC) application for stereoscopic 3D video is detailed Multi-view coding and Distributed Video Coding concepts representing the latest advancements in video coding are also covered in significant depth The definition of video coding standards is of the utmost... end, the Joint Video Team of the ITU-T Video Coding Expert Group (VCEG) and the ISO/IEC Moving Picture Experts Group (MPEG) have standardized a scalability extension to the existing H.264/AVC codec The H.264-based Scalable Video Coding (SVC) allows partial transmission and decoding to the bit stream, resulting in various options in terms of picture quality and spatial-temporal resolutions In this book,... MPEG-4 standard, and can also be applied to the joint encoding and transcoding of multiple video sequences (VSs) to be transmitted over bandwidth-limited channels using the H.264/ AVC standard The goal of wireless communication is to allow a user to access required services at any time with no regard to location or mobility Recent developments in wireless communications, multimedia technologies, and. .. communications Third/fourth-generation (3G/4G) wireless communication technologies provide significantly higher transmission rates and service flexibility over a wide coverage area, as compared with second-generation (2G) wireless communication systems High-compression, error-robust multimedia codecs have been designed to enable the support of multimedia application over error-prone bandwidth-limited channels... the top-left corner, while the highest frequencies are contained in the bottom-right, as shown in Figure 2.5 Note that many of the high-frequency coefficients are much smaller than the low-frequency coefficients Most of the energy in the block is now contained in a few low-frequency coefficients This is important, as the human eye is most sensitive to low-frequency data 12 Visual Media Coding and Transmission . Visual Media Coding and Transmission Visual Media Coding and Transmission Ahmet Kondoz © 2009 John Wiley & Sons, Ltd. ISBN: 97 8-0 -4 7 0-7 405 7-6 Visual Media Coding and Transmission Ahmet Kondoz Centre. prohibited. Library of Congress Cataloging-in-Publication Data Kondoz, A. M. (Ahmet M.) Visual media coding and transmission / Ahmet Kondoz. p. cm. Includes bibliographical references and index. ISBN 978 0 470. Frames and Hierarchical Coding 24 2.4.8 Error-Robust Video Coding 24 2.5 Video Codec Standards 28 2.5.1 Standardization Bodies 28 2.5.2 ITU Standards 29 2.5.3 MPEG Standards 29 2.5.4 H.264/MPEG- 4