Digital Tv And Multimedia Communication

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Advances On Digital Television And Wireless Multimedia Communications

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Author : Wenjun Zhang
language : en
Publisher: Springer
Release Date : 2012-10-20

Advances On Digital Television And Wireless Multimedia Communications written by Wenjun Zhang and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-10-20 with Computers categories.

This book constitutes the refereed proceedings of the 9th International Forum on Digital TV and Wireless Multimedia Communication, IFTC 2012, Shanghai, China, November. The 69 revised full papers presented were carefully reviewed and selected from numerous submissions. The papers are organized in topical sections on image processing and pattern recognition; image and video analysis; image quality assessment; text image and speech processing; content retrieval and security; source coding; multimedia communication; new advances in broadband multimedia; human computer interface; 3D video.

Digital Tv And Wireless Multimedia Communications

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Author : Guangtao Zhai
language : en
Publisher: Springer Nature
Release Date : 2022-04-16

Digital Tv And Wireless Multimedia Communications written by Guangtao Zhai and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-04-16 with Computers categories.

This book presents revised selected papers from the 18th International Forum on Digital TV and Wireless Multimedia Communication, IFTC 2021, held in Shanghai, China, in December 2021. The 41 papers presented in this volume were carefully reviewed and selected from 110 submissions. They were organized in topical sections on image analysis; quality assessment; target detection; video processing; big data.

Multimedia And Interactive Digital Tv

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Author : Margherita Pagani
language : en
Publisher: IGI Global
Release Date : 2003-01-01

Multimedia And Interactive Digital Tv written by Margherita Pagani and has been published by IGI Global this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-01-01 with Computers categories.

"Addressing the issues that managers in the multimedia industry have confronted while developing and implementing this innovative technology, this book focuses on the latest research and findings in digital television technologies. Covered are the major issues surrounding digital convergence including the digital metamarket and new digital media devices and their potential for IT convergence at the macro level. Also addressed are multimedia and interactive digital television and the economic implications of these technologies. Additionally, the managerial implications of interactive digital television are covered, including branding strategies for digital television channels and the critical role of content media management."

Digital Video And Audio Broadcasting Technology

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Author : Walter Fischer
language : en
Publisher: Springer Science & Business Media
Release Date : 2008-01-09

Digital Video And Audio Broadcasting Technology written by Walter Fischer and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-01-09 with Technology & Engineering categories.

This essential text for any technician in broadcasting deals with all the most important digital television, sound radio and multimedia standards. The book provides an in-depth look at these subjects in terms of practical experience. In addition it contains chapters on the basics of technologies such as analog television, digital modulation, COFDM or mathematical transformations between time and frequency domains. The attention in each respective field under discussion is focused on aspects of measuring techniques and of measuring practice, in each case consolidating the knowledge imparted with numerous practical examples. Since the entire field of electrical communications technology is traversed in a wide arc, those who are students in this field are not excluded either.

Digital Television In Europe

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Author : Wendy Van den Broeck
language : en
Publisher: ASP / VUBPRESS / UPA
Release Date : 2008

Digital Television In Europe written by Wendy Van den Broeck and has been published by ASP / VUBPRESS / UPA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Digital television categories.

Interactive Digital Television Technologies And Applications

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Author : Lekakos, George
language : en
Publisher: IGI Global
Release Date : 2007-05-31

Interactive Digital Television Technologies And Applications written by Lekakos, George and has been published by IGI Global this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-05-31 with Technology & Engineering categories.

The developments in digital television technology provide the unprecedented opportunity to drastically extend the role of television as a content delivery channel. E-health, e-commerce, e-government, and e-learning are only a few examples of value-added services provided over digital televisions infrastructures. These changes in the television industry challenge companies to adjust their strategies in order to meet the opportunities and threats in this new environment. Interactive Digital Television: Techniques and Applications presents the developments in the domain of interactive digital television covering both technical and business aspects. This book focuses on analyzing concepts, research issues, and methodological approaches, presenting existing solutions such as systems and prototypes for researchers, academicians, scholars, professionals and practitioners.

Introduction To Multimedia Communications

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Author : Kamisetty Rao
language : en
Publisher: John Wiley & Sons
Release Date : 2006-01-10

Introduction To Multimedia Communications written by Kamisetty Rao and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-01-10 with Technology & Engineering categories.

A comprehensive resource on multimedia communications. Covers recent trends and standardization activities in multimedia communications, such as layered structures, underlying theories and the current best design techniques. Describes the convergence of various technologies including communications, broadcasting, information technology, and home electronics, and emerging new communication services and applications resulting from the growth of the Internet and wireless technologies. Please go to www-ee.uta.edu/dip for additional information.

Video Error Concealment Techniques For Multi Broadcast Reception Of Digital Tv

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Author : Tobias Tröger
language : en
Publisher: Cuvillier Verlag
Release Date : 2012-10-02

Video Error Concealment Techniques For Multi Broadcast Reception Of Digital Tv written by Tobias Tröger and has been published by Cuvillier Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-10-02 with Technology & Engineering categories.

Abstract The transmission of digital TV signals to mobile receivers is often error-prone. As most TV broadcasting techniques provide only moderate error robustness, horizontal lines of consecutive image blocks are lost during decoding of the received video signals. In order to ensure high viewing experiences, these lost slices have to be filled by error concealment techniques. However, the reconstruction qualities of classical approaches which exploit spatial, temporal, or spatio-temporal signal correlations are not convincing yet. In the future, mobile TV receivers will support different broadcasting techniques in parallel. As a result, an erroneous high-resolution video signal and a correctly received low-resolution video signal, both representing the same TV service, will often be available. Focusing on the outlined scenario for multi-broadcast reception of digital TV signals, this thesis introduces the novel category of inter-sequence error concealment algorithms. The basic idea is to fill lost slices of the high-resolution video signal by the interpolated low-resolution video signal. Since the images of this reference signal are often cropped and delayed, robust spatio-temporal image alignment is crucial. By including a pixel-based or a feature-based alignment scheme, the proposed concealment algorithms provide excellent visual qualities and outstanding reconstruction qualities of up to 41 dB PSNR. Classical concealment techniques are outperformed by up to 15 dB PSNR. To further enhance the reconstruction quality, several extensions are introduced. First, the alignment robustness and the interpolation quality are increased. Subsequently, a classical temporal approach is incorporated as an alternative concealment mode to cope with low image qualities of the reference signal. Novel aspects include robust mode selection, enhanced motion estimation, and the reconstruction of the displaced frame differences from the reference signal. As a last extension, spatial refinement tackles blurring of concealed image blocks. Missing spectral components are recovered in a frequency selective way based on approximation and extrapolation principles. By combining all relevant extensions, the PSNR gain adds up to 20 dB with respect to classical concealment. Finally, inter-sequence error concealment is adapted to multi-broadcast reception of two erroneous high-resolution video signals. While spatial alignment can be omitted, classical concealment of blocks, being lost in both video signals, and drift compensation in predictively-coded frames are novel aspects. Again, high visual qualities are obtained and classical concealment is outperformed by up to 15 dB PSNR. Zusammenfassung Der Empfang digitaler Fernsehsignale mit mobilen Endgeräten wird meist durch Übertragungsfehler gestört. Da viele der eingesetzten Übertragungsstandards nur unzureichende Korrekturmechanismen bieten, können bei der Decodierung der empfangenen Videosignale Blockzeilenverluste auftreten. Um die Verlustgebiete zu verschleiern, werden üblicherweise zeitliche, örtliche oder zeitlich-örtliche Signalkorrelationen ausgenutzt. Die dabei erzielte Rekonstruktionsqualität ist jedoch häufig nicht zufriedenstellend. Zukünftig werden mobile Fernsehempfänger mehrere Übertragungsstandards parallel unterstützen. Durch den Einsatz dieser Mehrfachempfänger ist jedes Fernsehprogramm typischerweise in Form eines gestörten, hochauflösenden Videosignals und eines ungestörten, niedrigauflösenden Videosignals verfügbar. Ausgehend vom Mehrfachempfang digitaler Fernsehsignale wird in dieser Arbeit eine neue Gruppe von Verfahren zur Fehlerverschleierung beschrieben. Die grundlegende Idee dieser Ansätze besteht darin, verlorene Bildblöcke des hochauflösenden Videosignals durch Blöcke des interpolierten niedrigauflösenden Referenzsignals zu ersetzen. Da das Referenzsignal häufig nur Bildausschnitte zeigt und zudem meist zeitverzögert eintrifft, ist die korrekte Bestimmung der örtlichen Abbildungsparameter und des zeitlichen Versatzes ausschlaggebend für eine hochqualitative Verschleierung. Durch den Einsatz bildbasierter oder merkmalsbasierter Schätzverfahren werden eine exzellente visuelle Bildqualität und eine außergewöhnlich hohe Rekonstruktionsqualität erzielt. Der Spitzensignal-Rauschabstand beträgt bis zu 41 dB. Herkömmliche Verfahren werden um bis 15 dB übertroffen. Um die Rekonstruktionsqualität weiter zu erhöhen werden zahlreiche Erweiterungen der beschriebenen Verschleierungsansätze vorgeschlagen. Zuerst werden die Zuverlässigkeit der Parameterschätzung und die Interpolationsqualität verbessert. Danach wird ein herkömmliches zeitliches Verschleierungsverfahren integriert, um eine niedrige Bildqualität des Referenzsignals zu kompensieren. Neue Aspekte sind dabei die robuste Wahl des besseren Verschleierungsmodus, eine verbesserte Bewegungsschätzung und die Rekonstruktion des Prädiktionsfehlers unter Verwendung des Referenzsignals. Zuletzt wird die Bildschärfe bereits verschleierter Blöcke erhöht. Dazu werden fehlende Spektralanteile basierend auf frequenzselektiven Approximations- oder Extrapolationsansätzen wiederhergestellt. Durch die Kombination aller relevanten Erweiterungen wird die Rekonstruktionsqualität herkömmlicher Verfahren um bis zu 20 dB übertroffen. Abschließend werden die beschriebenen Fehlerverschleierungsverfahren an ein Szenario für den Mehrfachempfang digitaler Fernsehsignale angepasst, bei dem zwei fehlerhafte hochauflösende Videosignale verfügbar sind. Während die Schätzung der örtlichen Abbildungsparameter entfällt, müssen Bildblöcke, die in keinem der beiden Videosignale korrekt empfangen wurden, durch herkömmliche Verfahren verschleiert werden. Als weitere Neuerung wird ein Verfahren zur Kompensation des Drifteffekts in prädiktiv codierten Bildern vorgeschlagen. Auch bei diesem Empfangsszenario wird eine hohe visuelle Bildqualität erzielt und die Rekonstruktionsqualität herkömmlicher Verfahren um bis zu 15 dB übertroffen.

Digital Interactive Tv And Metadata

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Author : Arthur Lugmayr
language : en
Publisher: Springer Science & Business Media
Release Date : 2004-06-22

Digital Interactive Tv And Metadata written by Arthur Lugmayr and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-06-22 with Computers categories.

The book shows how digital-interactive television (digiTV) will affect the relation between the broadcaster and the consumer. Standardization processes, technological paradigms, and application development issues will be discussed. The emerging applications, innovations, and future concepts are described in detail. The triangle: content - end-user - technology will be conceptualized to create a vision and to overview provision of services that will be major innovative elments in the world of digital television. From the technical side, eXtensible Markup Language (XML)-based metadata standards are a major element in realizing new innovative concepts in the world of digital, interactive television. This book clearly shows by the introduction of applications and use-scenarios, which conceptual requirements and metadata models are applicable, which metadata subsets are applicable due to resource limitations, which metadata aspects are needed for nonlinear content viewing, etc. The book gives a broad and detailed both visionary and technical overview useful for graduates, engineers, and scientists; and last but not least decision-makers in the broadcasting industry.

Changing Television Environments

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Author : Manfred Tscheligi
language : en
Publisher: Springer Science & Business Media
Release Date : 2008-06-25

Changing Television Environments written by Manfred Tscheligi and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-06-25 with Computers categories.

This book constitutes the refereed proceedings of the 6th European Conference on Interactive Television, EuroITV 2008, held in Salzburg, Austria, in July 2008. The 42 revised full papers were carefully reviewed and selected from 156 submissions. The contributions cover significant aspects of the interactive television domain including submissions on user studies, technical challenges related to new developments as well as new kind of formats. The papers are organized in topical sections on interactive TV, interactive authoring, personalisation and recommender systems, mobile TV, social TV, new TV environments, iTV architectures and systems, user interfaces and interaction design, user studies, and accessibility.