Download or read book Audiovisual Quality Assessment and Prediction for Videotelephony written by Benjamin Belmudez and published by Springer. This book was released on 2014-12-27 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work presented in this book focuses on modeling audiovisual quality as perceived by the users of IP-based solutions for video communication like videotelephony. It also extends the current framework for the parametric prediction of audiovisual call quality. The book addresses several aspects related to the quality perception of entire video calls, namely, the quality estimation of the single audio and video modalities in an interactive context, the audiovisual quality integration of these modalities and the temporal pooling of short sample-based quality scores to account for the perceptual quality impact of time-varying degradations.

Download or read book Dimension Based Quality Analysis and Prediction for Videotelephony written by Falk Ralph Schiffner and published by Springer Nature. This book was released on 2020-11-08 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an in-depth investigation of the quality relevant perceptual video space in the domain of videotelephony. The author presents an extensive investigation and quality modeling of the underlying video quality dimensions and the overall quality. The author examines the underlying quality dimensions and describes a method for subjective evaluation as well as the instrumental estimation of video quality in videotelephony. The book presents a new subjective test method in the field of video quality assessment. Further, it explains the experimental examination of the underlying video quality dimensions and the subjective-based, as well as instrumental-based quality estimation. Provides an investigation of the underlying quality dimensions of video in videotelephony; Presents insights into a new subjective test method, standardized as ITU-T Rec. P.918; Includes insights into the subjective and instrumental video quality estimation.

Download or read book Dimension Based Quality Analysis and Prediction for Videotelephony written by Falk Ralph Schiffner and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an in-depth investigation of the quality relevant perceptual video space in the domain of videotelephony. The author presents an extensive investigation and quality modeling of the underlying video quality dimensions and the overall quality. The author examines the underlying quality dimensions and describes a method for subjective evaluation as well as the instrumental estimation of video quality in videotelephony. The book presents a new subjective test method in the field of video quality assessment. Further, it explains the experimental examination of the underlying video quality dimensions and the subjective-based, as well as instrumental-based quality estimation. Provides an investigation of the underlying quality dimensions of video in videotelephony; Presents insights into a new subjective test method, standardized as ITU-T Rec. P.918; Includes insights into the subjective and instrumental video quality estimation.

Download or read book Management of Speech and Video Telephony Quality in Heterogeneous Wireless Networks written by Błażej Lewcio and published by Springer Science & Business Media. This book was released on 2013-11-20 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book shows how networking research and quality engineering can be combined to successfully manage the transmission quality when speech and video telephony is delivered in heterogeneous wireless networks. Nomadic use of services requires intelligent management of ongoing transmission, and to make the best of available resources many fundamental trade-offs must be considered. Network coverage versus throughput and reliability of a connection is one key aspect, efficiency versus robustness of signal compression is another. However, to successfully manage services, user-perceived Quality of Experience (QoE) in heterogeneous networks must be known, and the perception of quality changes must be understood. These issues are addressed in this book, in particular focusing on the perception of quality changes due to switching between diverse networks, speech and video codecs, and encoding bit rates during active calls.

Download or read book Neural Correlates of Quality During Perception of Audiovisual Stimuli written by Sebastian Arndt and published by Springer. This book was released on 2015-12-14 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a new approach to examining the perceived quality of audiovisual sequences. It uses electroencephalography (EEG) to explain in detail how user quality judgments are formed within a test participant, and what the physiological implications might be when subjects are exposed to lower quality media. The book redefines the experimental paradigms of using EEG in the area of quality assessment so that they better suit the requirements of standard subjective quality testing, and presents experimental protocols and stimuli that have been adjusted accordingly.

Download or read book Assessment and Prediction of Speech Quality in Telecommunications written by Sebastian Möller and published by Springer Science & Business Media. This book was released on 2000-08-31 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: The quality of telecommunication voice services has become an important issue due to the evolving and liberalized market. With the advent of new technologies, however, a diversification takes place which makes it necessary to carefully plan and observe network quality. Speech communication quality - as it is perceived by the user or customer of a service - carries a multidimensional nature, a fact which must be reflected in its assessment and prediction with quality models. In this book a new schematic is developed which classifies different entities contributing to the quality of a service. It takes into account conversational user as well as service-related contributions. Starting from this concept, perceptively relevant constituents of speech communication quality are identified. A simulation model is developed and implemented, based on physical elements of the transmission configuration. It allows the perceptively most relevant parameters to be simulated, in real time and for the conversation situation. The book gives a valuable overview on assessment needed for reliably measuring the different quality dimensions. For the planning of telephone networks, quality models are presented which aim at predicting mouth-to-ear quality as it would be perceived by a user of the system. These models are an important tool for the planner of telecommunication networks, as they allow the expected quality to be estimated in advance, even before the network has been set up. Two well-known models (the SUBMOD and the E-model) are analyzed in more detail, with an emphasis on the psychoacoustic and psychophysical backgrounds. It turns out that model predictions are satisfactory for many types of degradations, but they can still be improved especially for new types of impairments. Proposals are made for quality model enhancement and combined approaches. Due to its `handbook' character, this book is an invaluable source of background information for anyone working in the field of speech quality assessment as well as telephone network planning and operation.

Download or read book Visual Signal Quality Assessment written by Chenwei Deng and published by Springer. This book was released on 2014-11-11 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides comprehensive coverage of the latest trends/advances in subjective and objective quality evaluation for traditional visual signals, such as 2D images and video, as well as the most recent challenges for the field of multimedia quality assessment and processing, such as mobile video and social media. Readers will learn how to ensure the highest storage/delivery/ transmission quality of visual content (including image, video, graphics, animation, etc.) from the server to the consumer, under resource constraints, such as computation, bandwidth, storage space, battery life, etc.

Download or read book Quality Engineering written by Sebastian Möller and published by Springer Nature. This book was released on 2023-05-23 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Der Begriff der Qualität und der Gebrauchstauglichkeit hat in der Informations- und Kommunikationstechnik sowie der Informatik eine herausragende Bedeutung. Der Autor führt in diese Thematik ein, indem er zunächst die Fachbegriffe und die Grundlagen der Psychophysik und Psychometrie erläutert. Darauf aufbauend wird der Kreislauf einer menschenorientierten Systementwicklung vorgestellt. Die Messung und Vorhersage von Qualität und Gebrauchstauglichkeit wird anhand von Beispielen veranschaulicht, u. a. für Sprach- und multimodale Dialogsysteme.

Download or read book Quality of Experience written by Sebastian Möller and published by Springer. This book was released on 2014-07-08 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt: This pioneering book develops definitions and concepts related to Quality of Experience in the context of multimedia- and telecommunications-related applications, systems and services and applies these to various fields of communication and media technologies. The editors bring together numerous key-protagonists of the new discipline “Quality of Experience” and combine the state-of-the-art knowledge in one single volume.

Download or read book Handbook of Research on Next Generation Mobile Communication Systems written by Panagopoulos, Athanasios D. and published by IGI Global. This book was released on 2015-08-26 with total page 605 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anyone who has ever shopped for a new smart phone, laptop, or other tech gadget knows that staying connected is crucial. There is a lot of discussion over which service provider offers the best coverage—enabling devices to work anywhere and at any time—with 4G and LTE becoming a pervasive part of our everyday language. The Handbook of Research on Next Generation Mobile Communication Systems offers solutions for optimal connection of mobile devices. From satellite signals to cloud technologies, this handbook focuses on the ways communication is being revolutionized, providing a crucial reference source for consumers, researchers, and business professionals who want to be on the frontline of the next big development in wireless technologies. This publication features a wide variety of research-based articles that discuss the future of topics such as bandwidth, energy-efficient power, device-to-device communication, network security and privacy, predictions for 5G communication systems, spectrum sharing and connectivity, and many other relevant issues that will influence our everyday use of technology.

Download or read book Fuzzy Systems Concepts Methodologies Tools and Applications written by Management Association, Information Resources and published by IGI Global. This book was released on 2017-02-22 with total page 1765 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are a myriad of mathematical problems that cannot be solved using traditional methods. The development of fuzzy expert systems has provided new opportunities for problem-solving amidst uncertainties. Fuzzy Systems: Concepts, Methodologies, Tools, and Applications is a comprehensive reference source on the latest scholarly research and developments in fuzzy rule-based methods and examines both theoretical foundations and real-world utilization of these logic sets. Featuring a range of extensive coverage across innovative topics, such as fuzzy logic, rule-based systems, and fuzzy analysis, this is an essential publication for scientists, doctors, engineers, physicians, and researchers interested in emerging perspectives and uses of fuzzy systems in various sectors.

Download or read book Assessing the Quality of Experience of Cloud Gaming Services written by Steven Schmidt and published by Springer Nature. This book was released on 2022-09-07 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an overview of concepts and challenges in intis investigated using structural equation modeling. The conveyed understanding of gaming QoE, empirical eraction quality in the domain of cloud gaming services. The author presents a unified evaluation approach by combining quantitative subjective assessment methods in a concise way. The author discusses a measurement tool, Gaming Input Quality Scale (GIPS), that assesses the interaction quality of such a service available. Furthermore, the author discusses a new framework to assess gaming Quality of Experience (QoE) using a crowdsourcing approach. Lastly, based on a large dataset including dominant network and encoding conditions, the evaluation method is investigated using structural equation modeling. The conveyed understanding of gaming QoE, empirical findings, and models presented in this book should be of particular interest to researchers working in the fields of quality and usability engineering, as well as service providers and network operators.

Download or read book Neural Correlates of Quality Perception for Complex Speech Signals written by Jan-Niklas Antons and published by Springer. This book was released on 2015-02-11 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book interconnects two essential disciplines to study the perception of speech: Neuroscience and Quality of Experience, which to date have rarely been used together for the purposes of research on speech quality perception. In five key experiments, the book demonstrates the application of standard clinical methods in neurophysiology on the one hand and of methods used in fields of research concerned with speech quality perception on the other. Using this combination, the book shows that speech stimuli with different lengths and different quality impairments are accompanied by physiological reactions related to quality variations, e.g., a positive peak in an event-related potential. Furthermore, it demonstrates that – in most cases – quality impairment intensity has an impact on the intensity of physiological reactions.

Download or read book Computer Performance Evaluation Modelling Techniques and Tools written by Peter Kemper and published by Springer Science & Business Media. This book was released on 2003-08-18 with total page 319 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 13th International Conference on Modelling Techniques and Tools for Computer Performance Evaluation, TOOLS 2003, held in Urbana, IL, USA, in September 2003. The 17 revised full papers presented together with a keynote paper were carefully reviewed and selected for inclusion in the book. The papers are organized in topical sections on tools for measuring, benchmarking, and online control; tools for evaluation of stochastic models; queueing models; Markovian arrival processes and phase-type distributions; and supporting model-based design of systems.

Download or read book Multimedia Transcoding in Mobile and Wireless Networks written by Ahmad, Ashraf M.A. and published by IGI Global. This book was released on 2008-07-31 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: "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.

Download or read book Advances in Communications Computing Networks and Security written by Paul Dowland and published by Lulu.com. This book was released on 2009 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Next Generation Mobile Networks and Ubiquitous Computing written by Pierre, Samuel and published by IGI Global. This book was released on 2010-08-31 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book provides a comprehensive and unified view of the latest and most innovative research findings on the many existing interactions between mobile networking, wireless communications, and ubiquitous computing"--Provided by publisher.