A Rate Distortion Optimized Multiple Description Video Codec For Error Resilient Transmission

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A Rate-distortion Optimized Multiple Description Video Codec for Error Resilient Transmission

Author : Moyuresh Biswas
Publisher :
ISBN 13 :
Total Pages : 508 pages
Book Rating : 4.:/5 (472 download)

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Book Synopsis A Rate-distortion Optimized Multiple Description Video Codec for Error Resilient Transmission by : Moyuresh Biswas

Download or read book A Rate-distortion Optimized Multiple Description Video Codec for Error Resilient Transmission written by Moyuresh Biswas and published by . This book was released on 2009 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: The demand for applications like transmission and sharing of video is ever-increasing. Although network resources (bandwidth in particular) and coverage, networking technologies, compression ratio of state-of-the-art video coders have improved, unreliability of the transmission medium prevents us from gaining the most benefit from these applications. This thesis introduces a video coder that is resilient to network failures for transmission applications by using the framework of multiple description coding (MDC). Unlike traditional video coding which compresses the video into single bitstream, in MDC the video is compressed into more than one bitstream which can be independently decoded. It not only averages out the effect of network errors over the bitstreams but it also makes it possible to utilize the multipath nature of most network topologies. An end-to-end rate-distortion optimization is proposed for the codec to make sure that the codec exhibits improved compression performance and that the descriptions are equally efficient to improve the final video quality. An optimized strategy for packetizing the compressed bitstreams of the descriptions is also proposed which guarantees that each packet is self-contained and efficient. The evaluation of the developed MD codec over simulated unreliable packet networks shows that it is possible to achieve improved resilience with the proposed strategies and the end video quality is significantly improved as a result. This is further verified with subjective evaluation over a range of different types of video test sequences.

Rate-Distortion Based Video Compression

Author : Guido M. Schuster
Publisher : Springer Science & Business Media
ISBN 13 : 1475725663
Total Pages : 305 pages
Book Rating : 4.4/5 (757 download)

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Book Synopsis Rate-Distortion Based Video Compression by : Guido M. Schuster

Download or read book Rate-Distortion Based Video Compression written by Guido M. Schuster and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the most intriguing problems in video processing is the removal of the redundancy or the compression of a video signal. There are a large number of applications which depend on video compression. Data compression represents the enabling technology behind the multimedia and digital television revolution. In motion compensated lossy video compression the original video sequence is first split into three new sources of information, segmentation, motion and residual error. These three information sources are then quantized, leading to a reduced rate for their representation but also to a distorted reconstructed video sequence. After the decomposition of the original source into segmentation, mo tion and residual error information is decided, the key remaining problem is the allocation of the available bits into these three sources of information. In this monograph a theory is developed which provides a solution to this fundamental bit allocation problem. It can be applied to all quad-tree-based motion com pensated video coders which use a first order differential pulse code modulation (DPCM) scheme for the encoding of the displacement vector field (DVF) and a block-based transform scheme for the encoding of the displaced frame differ ence (DFD). An optimal motion estimator which results in the smallest DFD energy for a given bit rate for the encoding of the DVF is also a result of this theory. Such a motion estimator is used to formulate a motion compensated interpolation scheme which incorporates a global smoothness constraint for the DVF.

Adaptive Multiple Description Mode Selection for Error Resilient Video Communications

Author : Brian A. Heng
Publisher :
ISBN 13 :
Total Pages : 132 pages
Book Rating : 4.:/5 (77 download)

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Book Synopsis Adaptive Multiple Description Mode Selection for Error Resilient Video Communications by : Brian A. Heng

Download or read book Adaptive Multiple Description Mode Selection for Error Resilient Video Communications written by Brian A. Heng and published by . This book was released on 2005 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: (Cont.) With this model of the expected end-to-end distortion, the encoder selects between MD coding modes in a rate-distortion (R-D) optimized manner to most effectively trade-off compression efficiency for error resilience. We show how this approach adapts to both the local characteristics of the video and to network conditions and demonstrate the resulting gains in performance using an H.264-based adaptive MD video coder. We also analyze the sensitivity of this system to imperfect knowledge of channel conditions and explore the benefits of using such a system with both single and multiple paths.

Joint Source-Channel Video Transmission

Author : Fan Zhai
Publisher : Springer Nature
ISBN 13 : 3031022440
Total Pages : 12 pages
Book Rating : 4.0/5 (31 download)

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Book Synopsis Joint Source-Channel Video Transmission by : Fan Zhai

Download or read book Joint Source-Channel Video Transmission written by Fan Zhai and published by Springer Nature. This book was released on 2022-06-01 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with the problem of joint source-channel video transmission, i.e., the joint optimal allocation of resources at the application layer and the other network layers, such as data rate adaptation, channel coding, power adaptation in wireless networks, quality of service (QoS) support from the network, and packet scheduling, for efficient video transmission. Real-time video communication applications, such as videoconferencing, video telephony, and on-demand video streaming, have gained increased popularity. However, a key problem in video transmission over the existing Internet and wireless networks is the incompatibility between the nature of the network conditions and the QoS requirements (in terms, for example, of bandwidth, delay, and packet loss) of real-time video applications. To deal with this incompatibility, a natural approach is to adapt the end-system to the network. The joint source-channel coding approach aims to efficiently perform content-aware cross-layer resource allocation, thus increasing the communication efficiency of multiple network layers. Our purpose in this book is to review the basic elements of the state-of-the-art approaches toward joint source-channel video transmission for wired and wireless systems. In this book, we present a general resource-distortion optimization framework, which is used throughout the book to guide our discussions on various techniques of joint source-channel video transmission. In this framework, network resources from multiple layers are assigned to each video packet according to its level of importance. It provides not only an optimization benchmark against which the performance of other sub-optimal systems can be evaluated, but also a useful tool for assessing the effectiveness of different error control components in practical system design. This book is therefore written to be accessible to researchers, expert industrial R&D engineers, and university students who are interested in the cutting edge technologies in joint source-channel video transmission. Contents: Introduction / Elements of a Video Communication System / Joint Source-Channel Coding / Error-Resilient Video Coding / Channel Modeling and Channel Coding / Internet Video Transmission / Wireless Video Transmission / Conclusions

Rate-distortion optimization in a robust video transmission based on unbalanced multiple

Author : David Comas Ballester
Publisher :
ISBN 13 :
Total Pages : 81 pages
Book Rating : 4.:/5 (87 download)

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Book Synopsis Rate-distortion optimization in a robust video transmission based on unbalanced multiple by : David Comas Ballester

Download or read book Rate-distortion optimization in a robust video transmission based on unbalanced multiple written by David Comas Ballester and published by . This book was released on 2001 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Investigations of the Error Resilient Rate Distortion Optimization for H.264 Video Transport Over Packet Lossy Channels

Author : Hao Zeng
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (837 download)

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Book Synopsis Investigations of the Error Resilient Rate Distortion Optimization for H.264 Video Transport Over Packet Lossy Channels by : Hao Zeng

Download or read book Investigations of the Error Resilient Rate Distortion Optimization for H.264 Video Transport Over Packet Lossy Channels written by Hao Zeng and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Multi-Frame Motion-Compensated Prediction for Video Transmission

Author : Thomas Wiegand
Publisher : Springer Science & Business Media
ISBN 13 : 9780792374978
Total Pages : 182 pages
Book Rating : 4.3/5 (749 download)

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Book Synopsis Multi-Frame Motion-Compensated Prediction for Video Transmission by : Thomas Wiegand

Download or read book Multi-Frame Motion-Compensated Prediction for Video Transmission written by Thomas Wiegand and published by Springer Science & Business Media. This book was released on 2001-09-30 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multi-Frame Motion-Compensated Prediction for Video Transmission presents a comprehensive description of a new technique in video coding and transmission. The work presented in the book has had a very strong impact on video coding standards and will be of interest to practicing engineers and researchers as well as academics. The multi-frame technique and the Lagrangian coder control have been adopted by the ITU-T as an integral part of the well known H.263 standard and are were adopted in the ongoing H.26L project of the ITU-T Video Coding Experts Group. This work will interest researchers and students in the field of video coding and transmission. Moreover, engineers in the field will also be interested since an integral part of the well known H.263 standard is based on the presented material.

Error Resilient Video Coding for Robust Transmission Over Mobile Networks

Author : Ehsan Maani
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (18 download)

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Book Synopsis Error Resilient Video Coding for Robust Transmission Over Mobile Networks by : Ehsan Maani

Download or read book Error Resilient Video Coding for Robust Transmission Over Mobile Networks written by Ehsan Maani and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Rate-distortion Optimised Video Transmission Using Pyramid Vector Quantisation

Author : Syed Mohsin Matloob Bokhari
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (824 download)

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Book Synopsis Rate-distortion Optimised Video Transmission Using Pyramid Vector Quantisation by : Syed Mohsin Matloob Bokhari

Download or read book Rate-distortion Optimised Video Transmission Using Pyramid Vector Quantisation written by Syed Mohsin Matloob Bokhari and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Video has become a key part of our daily digital lives. An increasing number of people are using video to document their lives and share their experiences through , sites such as YouTube and Facebook. Due to this ever increasing quantity of video content, it is clear that more efficient and robust video compression algorithms are needed. In this thesis video compression and transmission are investigated, specifically focused on High Definition (HD) video coding and wireless transmission. Unfor- tunately, the techniques relied upon for efficient compression are the same tech- niques that hinder robustness. This is because conventional video compression relies on inter-frame prediction (motion estimation), intra frame prediction and variable- length entropy encoding to achieve high compression ratios but, as a consequence, produces an encoded bitstream that is inherently sensitive to channel errors. There- fore, in order to ensure reliable and robust delivery over lossy channels, it is necessary to invoke various additional error detection and correction methods. In this thesis a technique called Pyramid Vector Quantisation (PVQ) is investig- ated. In contrast to the other methods, Pyramid Vector Quantisation has the ability to prevent error propagation through the use of fixed length codewords. This thesis introduces an efficient Rate Distortion Optimisation (RDO) algorithm for intra- mode PVQ which offers similar compression performance and visual quality to intra H.264/ AVC, intra VC-I, VC-3 and Motion JPEG 2000 while offering outstanding inherent error resilience. The results are reported for a range of representative 1080p HD video sequences. The error resilience performance of the enhanced PVQ codec is then evaluated for HD content in the context of a realistic (IEEE 802.11n) wireless environment. The impact of both uncorrelated and correlated channel errors is investigated. It is shown that PVQ provides high tolerance to corrupted data compared to the state-of-the- art H.264/ AVC while obviating the need for complex encoding tools. PVQ (without explicit error resilience tools and without error concealment) is able to significantly outperform H.264/ AVC (with error resilience tools and with error concealment) by up to I3.3dB PSNR for the same wireless simulation scenario. The benefit obtained by employing a Gaussian Markov Random Field (GMRF) based wavelet domain error concealment algorithm to post process erroneously re- ceived PVQ bitstreams is also investigated. It is shown that this algorithm leads to a further 2.5dB performance gain thus outperforming H.264/ AVC by up to 15.8dB PSNR. Overall, it is hoped that the results of this thesis demonstrate PVQ's feasib- ility for in-home HD video coding and transmission.

Rate-distortion Optimized Coding and Transmission of Compressed Video Streams Over Packet Networks

Author : Enrico Masala (ingegnere)
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (14 download)

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Book Synopsis Rate-distortion Optimized Coding and Transmission of Compressed Video Streams Over Packet Networks by : Enrico Masala (ingegnere)

Download or read book Rate-distortion Optimized Coding and Transmission of Compressed Video Streams Over Packet Networks written by Enrico Masala (ingegnere) and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

End-to-end Rate Distortion Analysis and Optimization for Robust Video Transmission Over Lossy Networks

Author : Rui Zhang
Publisher :
ISBN 13 :
Total Pages : 280 pages
Book Rating : 4.:/5 (498 download)

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Book Synopsis End-to-end Rate Distortion Analysis and Optimization for Robust Video Transmission Over Lossy Networks by : Rui Zhang

Download or read book End-to-end Rate Distortion Analysis and Optimization for Robust Video Transmission Over Lossy Networks written by Rui Zhang and published by . This book was released on 2001 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Error Resilient Video Compression and Transmission

Author : Sungdae Cho
Publisher :
ISBN 13 : 9780493919935
Total Pages : 149 pages
Book Rating : 4.9/5 (199 download)

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Book Synopsis Error Resilient Video Compression and Transmission by : Sungdae Cho

Download or read book Error Resilient Video Compression and Transmission written by Sungdae Cho and published by . This book was released on 2002 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Quality, Drift, and Delay Issues in Multiple Reference Frame Video Coding

Author : Athanasios Leontaris
Publisher :
ISBN 13 :
Total Pages : 138 pages
Book Rating : 4.:/5 (735 download)

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Book Synopsis Quality, Drift, and Delay Issues in Multiple Reference Frame Video Coding by : Athanasios Leontaris

Download or read book Quality, Drift, and Delay Issues in Multiple Reference Frame Video Coding written by Athanasios Leontaris and published by . This book was released on 2006 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: The efficiency of modern video compression is largely a result of motion-compensated prediction (MCP) that exploits temporal correlation in the signal. Multiple reference frames for MCP improve compression efficiency and error resilience and require new paradigms in (a) reference frame selection, (b) bit rate allocation among frames, (c) application to scalable video codecs, and (d) delay requirements of these codecs. We study all four of these aspects in this dissertation. A dual-frame video coder employs two past reference frames (one short-term frame and one long-term frame available for prediction) for MCP. Dual-frame video codecs benefit greatly from near-optimal intra/inter mode switching within a rate- distortion framework. We show that such a scheme improves the error resilience of the coder. We improve the mode-switching algorithm with the use of half-pel motion vectors. Furthermore, we investigate the effect of feedback in making more efficient mode-switching decisions. In previous work, it was shown that uneven assignment of quality to frames, to create high-quality (HQ) long-term reference frames, can enhance the performance of a dual-frame encoder. Here, we demonstrate the performance advantages of optimal mode selection among such HQ frames for video transmission over noisy channels. We investigate dual frame prediction for both base and enhancement layers of an SNR scalable video coder, with pulsed quality allocation in the base layer. Furthermore, a per-pixel drift estimation algorithm is introduced, where the encoder estimates the potential drift at the enhancement layer recursively and chooses coding modes accordingly. Real-time video applications require tight bounds on end-to-end delay. Hierarchical bi-directional prediction requires buffering in the encoder input and output. Dual frame prediction with pulsed quality requires buffering at the encoder output. Both codecs involve uneven bit rate allocation that affects the encoder and decoder buffering requirements. We derive an efficient rate allocation for hierarchical B-pictures, and investigate the trade-off between delay and compression efficiency. Furthermore, we discuss effect of the temporal prediction distance and prediction branch truncation.

Communicating Pictures

Author : David Bull
Publisher : Academic Press
ISBN 13 : 0080993745
Total Pages : 561 pages
Book Rating : 4.0/5 (89 download)

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Book Synopsis Communicating Pictures by : David Bull

Download or read book Communicating Pictures written by David Bull and published by Academic Press. This book was released on 2014-07-19 with total page 561 pages. Available in PDF, EPUB and Kindle. Book excerpt: Communicating Pictures starts with a unique historical perspective of the role of images in communications and then builds on this to explain the applications and requirements of a modern video coding system. It draws on the author's extensive academic and professional experience of signal processing and video coding to deliver a text that is algorithmically rigorous, yet accessible, relevant to modern standards, and practical. It offers a thorough grounding in visual perception, and demonstrates how modern image and video compression methods can be designed in order to meet the rate-quality performance levels demanded by today's applications, networks and users.With this book you will learn: Practical issues when implementing a codec, such as picture boundary extension and complexity reduction, with particular emphasis on efficient algorithms for transforms, motion estimators and error resilience Conflicts between conventional video compression, based on variable length coding and spatiotemporal prediction, and the requirements for error resilient transmission How to assess the quality of coded images and video content, both through subjective trials and by using perceptually optimised objective metrics Features, operation and performance of the state-of-the-art High Efficiency Video Coding (HEVC) standard Covers the basics of video communications and includes a strong grounding in how we perceive images and video, and how we can exploit redundancy to reduce bitrate and improve rate distortion performance Gives deep insight into the pitfalls associated with the transmission of real-time video over networks (wireless and fixed) Uses the state-of- the-art video coding standard (H.264/AVC) as a basis for algorithm development in the context of block based compression Insight into future video coding standards such as the new ISO/ITU High Efficiency Video Coding (HEVC) initiative, which extends and generalizes the H.264/AVC approach

Robust Error Control and Optimal Bit Allocation for Image and Video Transmission Over Wireless Channels

Author : Jianfei Cai
Publisher :
ISBN 13 :
Total Pages : 356 pages
Book Rating : 4.:/5 (51 download)

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Book Synopsis Robust Error Control and Optimal Bit Allocation for Image and Video Transmission Over Wireless Channels by : Jianfei Cai

Download or read book Robust Error Control and Optimal Bit Allocation for Image and Video Transmission Over Wireless Channels written by Jianfei Cai and published by . This book was released on 2002 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Visual communications plays an increasingly important role in information infrastructures. Despite a large number of standards and commercial products for applications of visual communications, providing high quality visual information over resource-limited wireless networks still remains a major challenge. This is because of the huge data size of visual information and the complicated characteristics of wireless channels. Due to the limited bandwidth of wireless channels, it is desired that visual information is compressed by highly efficient compression schemes while, due to the time-varying error prone environments of wireless channels, controlled redundancy is necessary to be added in the compressed bitstreams in order to ensure reliable transmissions. Therefore, there is a tradeoff between efficiency and reliability. The objective of this research is to find the optimal tradeoff between efficiency and reliability for image and video transmission over wireless channels. In this dissertation, several image and video transmission systems are developed based on robust error control and optimal bit allocation. For image transmission, two systems are developed, namely, TCQ-based error-resilient coding and robust joint source-channel coding (RJSCC). In the TCQ-based error-resilient coding, DCT-transformed blocks are classified and bits are optimally allocated among different classes and different coefficients according to their importance and sensitivity to the channel noise. In RJSCC, in addition to the bit allocation in source coding, we also consider the bit allocation between source coding and channel coding. We develop an end-to-end rate-distortion (R-D) function, which incorporates both transition probability and bit error rate of a bursty channel model. Based on the R-D function, bits can be allocated in such a way that we are able to achieve an optimum tradeoff between source coding accuracy and channel error protection under a fixed bandwidth limitation. As a result, RJSCC is among the best wireless image transmission systems reported in the literature. The study for wireless image transmission leads to our research in wireless video transmission. We propose a novel pre-interleaving scheme for video streaming over bursty loss channels. The pre-interleaving scheme is able to generate the desired error patterns for video source decoding while still preserving the features of the conventional combination of channel decoding and interleaving. The pre-interleaving scheme can be applied to any standard video codecs and to both wireless channels and packet-loss channels. Finally, we show the extensive study on the rate controls in wireless video streaming systems. The study includes three aspects: the rate control for off line video coding, the rate control for rate-reduction transcoding and the rate control for adaptive wireless video streaming. We propose a rate control scheme which is able to optimally allocate bits among video frames. We demonstrate that the proposed rate control scheme can provide better quality than that of the state-of-the-art H.263 standard.

Visual Media Coding and Transmission

Author : Ahmet Kondoz
Publisher : John Wiley & Sons
ISBN 13 : 0470740655
Total Pages : 588 pages
Book Rating : 4.4/5 (77 download)

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Book Synopsis Visual Media Coding and Transmission by : Ahmet Kondoz

Download or read book Visual Media Coding and Transmission written by Ahmet Kondoz and published by John Wiley & Sons. This book was released on 2009-04-01 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the state-of-the-art in visual media coding and transmission Visual Media Coding and Transmission is an output of VISNET II NoE, which is an EC IST-FP6 collaborative research project by twelve esteemed institutions from across Europe in the fields of networked audiovisual systems and home platforms. The authors provide information that will be essential for the future study and development of visual media communications technologies. The book contains details of video coding principles, which lead to advanced video coding developments in the form of Scalable Coding, Distributed Video Coding, Non-Normative Video Coding Tools and Transform Based Multi-View Coding. Having detailed the latest work in Visual Media Coding, networking aspects of Video Communication is detailed. Various Wireless Channel Models are presented to form the basis for both link level quality of service (QoS) and cross network transmission of compressed visual data. Finally, Context-Based Visual Media Content Adaptation is discussed with some examples. Key Features: Contains the latest advances in this important field covered by VISNET II NoE Addresses the latest multimedia signal processing and coding algorithms Covers all important advance video coding techniques, scalable and multiple description coding, distributed video coding and non-normative tools Discusses visual media networking with various wireless channel models QoS methods by way of link adaptation techniques are detailed with examples Presents a visual media content adaptation platform, which is both context aware and digital rights management enabled Contains contributions from highly respected academic and industrial organizations Visual Media Coding and Transmission will benefit researchers and engineers in the wireless communications and signal processing fields. It will also be of interest to graduate and PhD students on media processing, coding and communications courses.

Error Resilient Multiple Description Video Coding Over Wireless Ad-hoc Networks

Author : Yiting Liao
Publisher :
ISBN 13 : 9781124654782
Total Pages : 200 pages
Book Rating : 4.6/5 (547 download)

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Book Synopsis Error Resilient Multiple Description Video Coding Over Wireless Ad-hoc Networks by : Yiting Liao

Download or read book Error Resilient Multiple Description Video Coding Over Wireless Ad-hoc Networks written by Yiting Liao and published by . This book was released on 2011 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing reliable video communications over wireless ad-hoc networks is becoming increasingly important as these networks become widely deployed in military, homeland defense, and disaster recovery applications. However, wireless ad-hoc networks impose great challenges to support such applications due to the highly dynamic network topology and the unreliable wireless channels. Given the error-prone nature of the wireless ad-hoc networks and the vulnerability of compressed video to packet losses, it is critical to enhance error resilience of video transmission over such lossy networks.