Real Time Video Compression

Real Time Video Compression

The demonstrated results, presented in this book, suggest that the XYZ video compression technique is not only a fast algorithm, but also provides superior compression ratios and high quality of the video compared to existing standard ...

Author: Raymond Westwater

Publisher: Springer

ISBN: 9780585323138

Category: Technology & Engineering

Page: 164

View: 757

Real-Time Video Compression: Techniques and Algorithms introduces the XYZ video compression technique, which operates in three dimensions, eliminating the overhead of motion estimation. First, video compression standards, MPEG and H.261/H.263, are described. They both use asymmetric compression algorithms, based on motion estimation. Their encoders are much more complex than decoders. The XYZ technique uses a symmetric algorithm, based on the Three-Dimensional Discrete Cosine Transform (3D-DCT). 3D-DCT was originally suggested for compression about twenty years ago; however, at that time the computational complexity of the algorithm was too high, it required large buffer memory, and was not as effective as motion estimation. We have resurrected the 3D-DCT-based video compression algorithm by developing several enhancements to the original algorithm. These enhancements make the algorithm feasible for real-time video compression in applications such as video-on-demand, interactive multimedia, and videoconferencing. The demonstrated results, presented in this book, suggest that the XYZ video compression technique is not only a fast algorithm, but also provides superior compression ratios and high quality of the video compared to existing standard techniques, such as MPEG and H.261/H.263. The elegance of the XYZ technique is in its simplicity, which leads to inexpensive VLSI implementation of any XYZ codec. Real-Time Video Compression: Techniques and Algorithms can be used as a text for graduate students and researchers working in the area of real-time video compression. In addition, the book serves as an essential reference for professionals in the field.
Categories: Technology & Engineering

Codesign for Real Time Video Applications

Codesign for Real Time Video Applications

This is not desirable because the user will perform others tasks in combination with the compression algorithms. For example in a video conference, the user might like to show and manipulate documents or visualize simulation results.

Author: Jörg Wilberg

Publisher: Springer Science & Business Media

ISBN: 9781461560814

Category: Computers

Page: 191

View: 240

Codesign for Real-Time Video Applications describes a modern design approach for embedded systems. It combines the design of hardware, software, and algorithms. Traditionally, these design domains are treated separately to reduce the design complexity. Advanced design tools support a codesign of the different domains which opens an opportunity for exploiting synergetic effects. The design approach is illustrated by the design of a video compression system. It is integrated into the video card of a PC. A VLIW processor architecture is used as the basis of the compression system and popular video compression algorithms (MPEG, JPEG, H.261) are analyzed. A complete top-down design flow is presented and the design tools for each of the design steps are explained. The tools are integrated into an HTML-based design framework. The resulting design data can be directly integrated into the WWW. This is a crucial aspect for supporting distributed design groups. The design data can be directly documented an cross referencing in an almost arbitrary way is supported. This provides a platform for information sharing among the different design domains. Codesign for Real-Time Video Applications focuses on the multi-disciplinary aspects of embedded system design. It combines design automation and advanced processor design with an important application domain. A quantitative design approach is emphasized which focuses the design time on the most crucial components. Thus enabling a fast and cost efficient design methodology. This book will be of interest to researchers, designers and managers working in embedded system design.
Categories: Computers

Real Time Video Encoding Via ATM

Real Time Video Encoding Via ATM

1.1 Introduction to the Problem The task of this project was to purchase the right ATM equipment and install it so that the SP2 can act as a real time video signal processor for the Video Codec project . Unless the video compression is ...

Author: Daniel King-Leung Tung

Publisher:

ISBN: CORNELL:31924083790307

Category:

Page: 32

View: 292

Categories:

Entity Relationship Approach ER 92

Entity Relationship Approach   ER  92

DVI is based on two digital video formats : Production - Level Video ( PLV ) and Real - Time Video ( RTV ) . PLV uses a proprietary compression algorithm which allows VHS quality video to be produced from a data rate of about 1 Mbit ...

Author: Günther Pernul

Publisher: Springer Science & Business Media

ISBN: 3540560238

Category: Computers

Page: 439

View: 761

This volume comprises the proceedings of the Eleventh International Conference on the Entity-Relationship Approach held in Karlsruhe, Germany, October 7-9, 1992. It contains the full versions of all the 22 accepted papers selected from in total 64 submissions; in addition, the two invited talks by Scheer and by Tsichritzis and others are represented asfull papers and the two other invited speakers contribute extended abstracts. All the contributions describe original research related to theoretical or practical aspects of the Entity-Relationship Approach,reflecting the trend of recent years in a wide range of database research activities. In particular, the topics database design aspects, object-orientation, integrity constraints, query languages, knowledge-based techniques, and development of new applications are addressed.
Categories: Computers

4G Wireless Video Communications

4G Wireless Video Communications

Applications that require real-time encoding are video conferencing (and all interactive applications), broadcast digital television and any streaming application where the input video sequence is live. However, the majority of video ...

Author: Haohong Wang

Publisher: John Wiley & Sons

ISBN: 0470745177

Category: Technology & Engineering

Page: 420

View: 239

A comprehensive presentation of the video communication techniques and systems, this book examines 4G wireless systems which are set to revolutionise ubiquitous multimedia communication.4G Wireless Video Communications covers the fundamental theory and looks at systems’ descriptions with a focus on digital video. It addresses the key topics associated with multimedia communication on 4G networks, including advanced video coding standards, error resilience and error concealment techniques, as well as advanced content-analysis and adaptation techniques for video communications, cross-layer design and optimization frameworks and methods. It also provides a high-level overview of the digital video compression standard MPEG-4 AVC/H.264 that is expected to play a key role in 4G networks. Material is presented logically allowing readers to turn directly to specific points of interest. The first half of the book covers fundamental theory and systems, while the second half moves onto advanced techniques and applications. This book is a timely reflection of the latest advances in video communications for 4G wireless systems. One of the first books to study the latest video communications developments for emerging 4G wireless systems Considers challenges and techniques in video delivery over 4G wireless systems Examines system architecture, key techniques and related standards of advanced wireless multimedia applications Written from both the perspective of industry and academia
Categories: Technology & Engineering

Hybrid Video Compression Standard

Hybrid Video Compression Standard

1, basic information and properties of various video compression standards are briefly discussed. ... basic concept of video encoder and decoder along with experimental results is demonstrated with the help of real-time video signal.

Author: Dhaval R. Bhojani

Publisher: Springer Nature

ISBN: 9789811502453

Category: Technology & Engineering

Page: 58

View: 994

The book presents compression techniques for digital video stream, describing their design using various image transforms, such as discrete cosine transform (DCT), discrete wavelet transform (DWT), and singular value decomposition (SVD). It first discusses the basic requirements and applications of video compression techniques. The book then addresses video compression using DCT as well as the hybrid compression technique, designed and implemented using DCT, DWT and SVD, demonstrating the simulation results for both. Lastly, it proposes future research directions in the field.
Categories: Technology & Engineering

Motion Estimation Algorithms for Video Compression

Motion Estimation Algorithms for Video Compression

Motion JPEG compresses each frame in a video sequence individually using JPEG compression. ... However, as stated, it is also these searches that cause MPEG to be far less feasible for real-time encoding on non-specialized hardware ...

Author: Borko Furht

Publisher: Springer Science & Business Media

ISBN: 9781461562412

Category: Computers

Page: 164

View: 654

Video technology promises to be the key for the transmission of motion video. A number of video compression techniques and standards have been introduced in the past few years, particularly the MPEG-1 and MPEG-2 for interactive multimedia and for digital NTSC and HDTV applications, and H.2611H.263 for video telecommunications. These techniques use motion estimation techniques to reduce the amount of data that is stored and transmitted for each frame. This book is about these motion estimation algorithms, their complexity, implementations, advantages, and drawbacks. First, we present an overview of video compression techniques with an emphasis to techniques that use motion estimation, such as MPEG and H.2611H.263. Then, we give a survey of current motion estimation search algorithms, including the exhaustive search and a number of fast search algorithms. An evaluation of current search algorithms, based on a number of experiments on several test video sequences, is presented as well. The theoretical framework for a new fast search algorithm, Densely-Centered Uniform-P Search (DCUPS), is developed and presented in the book. The complexity of the DCUPS algorithm is comparable to other popular motion estimation techniques, however the algorithm shows superior results in terms of compression ratios and video qUality. We should stress out that these new results, presented in Chapters 4 and 5, have been developed by Joshua Greenberg, as part of his M.Sc. thesis entitled "Densely-Centered Uniform P-Search: A Fast Motion Estimation Algorithm" (FAU, 1996).
Categories: Computers

Video Codec Design

Video Codec Design

12.1 INTRODUCTION In the early days of video coding technology , systems tended to fall into two categories , dedicated hardware designs for real - time video coding ( e.g. H.261 videophones ) or software designs for “ off - line ...

Author: Iain E. Richardson

Publisher: John Wiley & Sons

ISBN: 0471485535

Category: Science

Page: 314

View: 816

Video compression coding is the enabling technology behind a new wave of communication applications. From streaming internet video to broadcast digital television and digital cinema, the video codec is a key building block for a host of new multimedia applications and services. Video Codec Design sets out to de-mystify the subject of video coding and present a practical, design-based approach to this emerging field. Featuring: * Guidance on the practical design and implementation of video coding technology. * Explanation of the major video coding standards, including MPEG-2, MPEG-4, H.263 and H.26L. * Detailed coverage of key video coding techniques and core algorithms. * Examination of critical design issues including transmission, Quality of Service and processing platforms. * A wealth of illustrations and practical examples, including quantitative comparisons of design alternatives. Video Codec Design provides communications engineers, system designers, researchers and technical managers with an essential handbook to image and video compression technology. The clear presentation and emphasis on real-life examples make this book an excellent teaching tool for computer science and electronic engineering instructors.
Categories: Science

Computer Graphics

Computer Graphics

Real time video compression algorithm compresses digital video information at rates that range from 50 : 1 to 200 : 1 . JPEG , MPEG , P * 64 compression schemes use discrete cosine transform , an encoding algorithm that quantifies the ...

Author: Isrd Group

Publisher: Tata McGraw-Hill Education

ISBN: 0070593760

Category:

Page:

View: 332

Categories:

Still Image and Video Compression with MATLAB

Still Image and Video Compression with MATLAB

Due tothe availability of efficient, highspeed central processing units (CPUs), many Internetbased applications offer software solutions to displaying videoin real time. However, decompressing and displaying high resolutionvideo in real ...

Author: K. S. Thyagarajan

Publisher: John Wiley & Sons

ISBN: 1118097769

Category: Technology & Engineering

Page: 428

View: 809

This book describes the principles of image and video compression techniques and introduces current and popular compression standards, such as the MPEG series. Derivations of relevant compression algorithms are developed in an easy-to-follow fashion. Numerous examples are provided in each chapter to illustrate the concepts.
Categories: Technology & Engineering