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Author: Jens Brandt
Publisher: Logos Verlag Berlin
ISBN: 9783832523909
Category :
Languages : en
Pages : 0
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Book Description
Transmission of digital audio and video streams is one of the major applications in future wireless networks. Increasing bandwidths and processing power make it possible to receive video streams almost everywhere. But the classes of mobile devices vary from multimedia enabled mobile phones to high-end notebooks. The varying capabilities of these devices such as display resolution, processing power, memory size or network connection result in a great heterogeneity of client devices. To support as many different devices as possible, some kind of video adaptation is needed. In this book we propose a multimedia gateway system that provides a video adaptation service to its clients. The main focus, however, is the adaptation process itself. Therefore, we investigated different compressed domain transcoding techniques and identified three adaptation dimensions that need to be considered to support a great heterogeneity of devices. Based on these observations a novel transcoding architecture is presented that smartly combines existing transcoding mechanisms to build a multidimensional compressed domain transcoder.
Author: Jens Brandt
Publisher: Logos Verlag Berlin
ISBN: 9783832523909
Category :
Languages : en
Pages : 0
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Book Description
Transmission of digital audio and video streams is one of the major applications in future wireless networks. Increasing bandwidths and processing power make it possible to receive video streams almost everywhere. But the classes of mobile devices vary from multimedia enabled mobile phones to high-end notebooks. The varying capabilities of these devices such as display resolution, processing power, memory size or network connection result in a great heterogeneity of client devices. To support as many different devices as possible, some kind of video adaptation is needed. In this book we propose a multimedia gateway system that provides a video adaptation service to its clients. The main focus, however, is the adaptation process itself. Therefore, we investigated different compressed domain transcoding techniques and identified three adaptation dimensions that need to be considered to support a great heterogeneity of devices. Based on these observations a novel transcoding architecture is presented that smartly combines existing transcoding mechanisms to build a multidimensional compressed domain transcoder.
Author: Ahmad, Ashraf M.A.
Publisher: IGI Global
ISBN: 1599049856
Category : Computers
Languages : en
Pages : 460
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Book Description
"This book is designed to provide readers with relevant theoretical frameworks and latest technical and institutional solutions for transcoding multimedia in mobile and wireless networks"--Provided by publisher.
Author: A. Ranjith Ram
Publisher: Springer Science & Business Media
ISBN: 1461438373
Category : Computers
Languages : en
Pages : 185
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Book Description
This book presents various video processing methodologies that are useful for distance education. The motivation is to devise new multimedia technologies that are suitable for better representation of instructional videos by exploiting the temporal redundancies present in the original video. This solves many of the issues related to the memory and bandwidth limitation of lecture videos. The various methods described in the book focus on a key-frame based approach which is used to time shrink, repackage and retarget instructional videos. All the methods need a preprocessing step of shot detection and recognition, which is separately given as a chapter. We find those frames which are well-written and distinct as key-frames. A super-resolution based image enhancement scheme is suggested for refining the key-frames for better legibility. These key-frames, along with the audio and a meta-data for the mutual linkage among various media components form a repackaged lecture video, which on a programmed playback, render an estimate of the original video but at a substantially compressed form. The book also presents a legibility retentive retargeting of this instructional media on mobile devices with limited display size. All these technologies contribute to the enhancement of the outreach of distance education programs. Distance education is now a big business with an annual turnover of over 10-12 billion dollars. We expect this to increase rapidly. Use of the proposed technology will help deliver educational videos to those who are less endowed in terms of network bandwidth availability and to those everywhere who are even on a move by delivering it effectively to mobile handsets (including PDAs). Thus, technology developers, practitioners, and content providers will find the material very useful.
Author: Guoping Qiu
Publisher: Springer Science & Business Media
ISBN: 3642156959
Category : Computers
Languages : en
Pages : 780
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Book Description
The 2010 Pacific-Rim Conference on Multimedia (PCM 2010) was held in Shanghai at Fudan University, during September 21–24, 2010. Since its inauguration in 2000, PCM has been held in various places around the Pacific Rim, namely Sydney (PCM 2000), Beijing (PCM 2001), Hsinchu (PCM 2002), Singapore (PCM 2003), Tokyo (PCM 2004), Jeju (PCM 2005), Zhejiang (PCM 2006), Hong Kong (PCM 2007), Tainan (PCM 2008), and Bangkok (PCM 2009). PCM is a major annual international conference organized as a forum for the dissemination of state-of-the-art technological advances and research results in the fields of theoretical, experimental, and applied multimedia analysis and processing. PCM 2010 featured a comprehensive technical program which included 75 oral and 56 poster presentations selected from 261 submissions from Australia, Canada, China, France, Germany, Hong Kong, India, Iran, Italy, Japan, Korea, Myanmar, Norway, Singapore, Taiwan, Thailand, the UK, and the USA. Three distinguished researchers, Prof. Zhi-Hua Zhou from Nanjing University, Dr. Yong Rui from Microsoft, and Dr. Tie-Yan Liu from Microsoft Research Asia delivered three keynote talks to the conference. We are very grateful to the many people who helped to make this conference a s- cess. We would like to especially thank Hong Lu for local organization, Qi Zhang for handling the publication of the proceedings, and Cheng Jin for looking after the c- ference website and publicity. We thank Fei Wu for organizing the special session on large-scale multimedia search in the social network settings.
Author: John W. Woods
Publisher: Academic Press
ISBN: 0123814200
Category : Computers
Languages : en
Pages : 618
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Book Description
This fully revised and expanded edition gives readers the necessary understanding of image and video processing concepts to contribute to this hot technology's future advances. Important new topics include introductory random processes, image enhancement and analysis, and the new MPEG scalable video coding standard.
Author: Madhusanka Liyanage
Publisher: John Wiley & Sons
ISBN: 1118900278
Category : Technology & Engineering
Languages : en
Pages : 440
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Book Description
This book describes the concept of a Software Defined Mobile Network (SDMN), which will impact the network architecture of current LTE (3GPP) networks. SDN will also open up new opportunities for traffic, resource and mobility management, as well as impose new challenges on network security. Therefore, the book addresses the main affected areas such as traffic, resource and mobility management, virtualized traffics transportation, network management, network security and techno economic concepts. Moreover, a complete introduction to SDN and SDMN concepts. Furthermore, the reader will be introduced to cutting-edge knowledge in areas such as network virtualization, as well as SDN concepts relevant to next generation mobile networks. Finally, by the end of the book the reader will be familiar with the feasibility and opportunities of SDMN concepts, and will be able to evaluate the limits of performance and scalability of these new technologies while applying them to mobile broadb and networks.
Author: Huifang Sun
Publisher: CRC Press
ISBN: 0849316944
Category : Technology & Engineering
Languages : en
Pages : 458
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Book Description
Professionals in the video and multimedia industries need a book that explains industry standards for video coding and how to convert the compressed information between standards. Digital Video Transcoding for Transmission and Storage answers this demand while also supplying the theories and principles of video compression and transcoding technologies. Emphasizing digital video transcoding techniques, this book summarizes its content via examples of practical methods for transcoder implementation. It relates almost all of its featured transcoding technologies to practical applications. This volume takes a structured approach, starting with basic video transcoding concepts and progressing toward the most sophisticated systems. It summarizes material from research papers, lectures, and presentations. Organized into four parts, the text first provides the background of video coding theory, principles of video transmission, and video coding standards. The second part includes three chapters that explain the theory of video transcoding and practical problems. The third part explores buffer management, packet scheduling, and encryption in the transcoding. The book concludes by describing the application of transcoding, universal multimedia access with the emerging MPEG-21 standard, and the end-to-end test bed.
Author: John W. Woods
Publisher: Academic Press
ISBN: 0123814219
Category : Computers
Languages : en
Pages : 617
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Book Description
Multidimensional Signal, Image, and Video Processing and Coding gives a concise introduction to both image and video processing, providing a balanced coverage between theory, applications and standards. It gives an introduction to both 2-D and 3-D signal processing theory, supported by an introduction to random processes and some essential results from information theory, providing the necessary foundation for a full understanding of the image and video processing concepts that follow. A significant new feature is the explanation of practical network coding methods for image and video transmission. There is also coverage of new approaches such as: super-resolution methods, non-local processing, and directional transforms. Multidimensional Signal, Image, and Video Processing and Coding also has on-line support that contains many short MATLAB programs that complement examples and exercises on multidimensional signal, image, and video processing. There are numerous short video clips showing applications in video processing and coding, plus a copy of the vidview video player for playing .yuv video files on a Windows PC and an illustration of the effect of packet loss on H.264/AVC coded bitstreams. New to this edition: New appendices on random processes, information theory New coverage of image analysis – edge detection, linking, clustering, and segmentation Expanded coverage on image sensing and perception, including color spaces Now summarizes the new MPEG coding standards: scalable video coding (SVC) and multiview video coding (MVC), in addition to coverage of H.264/AVC Updated video processing material including new example on scalable video coding and more material on object- and region-based video coding More on video coding for networks including practical network coding (PNC), highlighting the significant advantages of PNC for both video downloading and streaming New coverage of super-resolution methods for image and video Only R&D level tutorial that gives an integrated treatment of image and video processing - topics that are interconnected New chapters on introductory random processes, information theory, and image enhancement and analysis Coverage and discussion of the latest standards in video coding: H.264/AVC and the new scalable video standard (SVC)
Author: Dian Tjondronegoro
Publisher: BoD – Books on Demand
ISBN: 9533079088
Category : Technology & Engineering
Languages : en
Pages : 170
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Book Description
As multimedia-enabled mobile devices such as smart phones and tablets are becoming the day-to-day computing device of choice for users of all ages, everyone expects that all mobile multimedia applications and services should be as smooth and as high-quality as the desktop experience. The grand challenge in delivering multimedia to mobile devices using the Internet is to ensure the quality of experience that meets the users' expectations, within reasonable costs, while supporting heterogeneous platforms and wireless network conditions. This book aims to provide a holistic overview of the current and future technologies used for delivering high-quality mobile multimedia applications, while focusing on user experience as the key requirement. The book opens with a section dealing with the challenges in mobile video delivery as one of the most bandwidth-intensive media that requires smooth streaming and a user-centric strategy to ensure quality of experience. The second section addresses this challenge by introducing some important concepts for future mobile multimedia coding and the network technologies to deliver quality services. The last section combines the user and technology perspectives by demonstrating how user experience can be measured using case studies on urban community interfaces and Internet telephones.
Author: Marios C. Angelides
Publisher: CRC Press
ISBN: 1420076655
Category : Computers
Languages : en
Pages : 458
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Book Description
The emergence of content- and context-aware search engines, which not only personalize searching and delivery but also the content, has caused the emergence of new infrastructures capable of end-to-end ubiquitous transmission of personalized multimedia content to any device on any network at any time. Personalizing and adapting content requires pro
