The proceedings contain 25 papers. The special focus in this conference is on Audio Transport, Video Encoding, Multi-source multimedia, Multicasting and Broadcasting. The topics include: Minimising perceived latency i...
ISBN:
(纸本)3540239286
The proceedings contain 25 papers. The special focus in this conference is on Audio Transport, Video Encoding, Multi-source multimedia, Multicasting and Broadcasting. The topics include: Minimising perceived latency in audio-conferencing systems over application-level multicast;background noise influence on VoIP traffic profile;dynamic bit-rate allocation with fuzzy measures for MPEG transcoding;scalable stereo video coding for heterogeneous environments;multi-source multimedia conferencing over single source multicast;distributed multi-source video composition on high capacity networks;analysis of FEC codes for partially reliable media broadcasting schemes;a comparison of opportunistic scheduling algorithms for streaming media in high-speed downlink packet access;adaptive scheduling for improved quality differentiation;residual motion coding method for error resilient transcoding system;a fast motion estimation algorithm based on context-adaptive parallelogram search pattern;using dynamic replication to manage service availability in a multimedia server cluster;using the session initiation protocol for connected multimedia services in a ubiquitous home network environment;architecture and protocols for the protection and management of multimedia information and digital image authentication based on turbo codes.
The proceedings contain 44 papers from the First International conference on Quality of Service in Heterogeneous Wired/Wireless networks, QShine 2004. The topics discussed include: session based access control in cont...
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ISBN:
(纸本)0769522335
The proceedings contain 44 papers from the First International conference on Quality of Service in Heterogeneous Wired/Wireless networks, QShine 2004. The topics discussed include: session based access control in content delivery networks in presence of congestion;QoS-driven asynchronous uplink subchannel allocation algorithms for space-time OFDM-CDMA systems in wireless networks;managing wireless sensor networks with supply chain strategy;on robust allocation policies in wireless heterogeneous networks;efficient policy-based routing without virtual circuits;performance of bluetooth piconets with finite buffers;and restorability enhancement and service-oriented protection in radio access networks.
Universal multimediaaccess (UMA), where users can consume any multimedia resource anywhere at any time.. is the driving vision of ongoing ISO/IEC Moving Picture Experts Group (MPEG) standardization efforts. In that c...
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ISBN:
(纸本)3540238948
Universal multimediaaccess (UMA), where users can consume any multimedia resource anywhere at any time.. is the driving vision of ongoing ISO/IEC Moving Picture Experts Group (MPEG) standardization efforts. In that context, intelligent adaptation means that before resources are sent over the network, they are prepared according to the client's device capabilities, the network conditions, or even the user's content preferences. In this paper, we argue that Semantic Web Services can serve as a key enabling technology to achieve the goals of UMA. As the standards evolve. more and more specialized software tools will be available that provide specific functionalitiess for adapting the media in different dimensions. When the functionality of such tools is described declaratively with the means of Semantic Web Services technology, intelligent adaptation network nodes can be developed, capable of automatically composing multi-step adaptation sequences and dynamically integrating such services available on the Web. This paper describes the architecture and a prototypical implementation of an intelligent adaptation node that supports automatic, knowledge-based service composition which is made possible by the shared domain ontology defined in MPEG metadata standards.
The proceedings contain 47 papers. The special focus in this conference is on Digital Library Architectures, Evaluation and Usability. The topics include: Dynamic digital library construction and configuration;a multi...
ISBN:
(纸本)3540230130
The proceedings contain 47 papers. The special focus in this conference is on Digital Library Architectures, Evaluation and Usability. The topics include: Dynamic digital library construction and configuration;a multimediacontent management system for digital library applications;designing an integrated digital library framework to support multiple heterogeneous collections;a year in the life of an open source digital repository system;spatial ranking methods for geographic information retrieval (GIR) in digital libraries;evaluation of an information system in an information seeking process;next generation search interfaces - interactive data exploration and hypothesis formulation;ontology based interfaces to access a library of virtual hyperbooks;document icons and page thumbnails: issues in construction of document thumbnails for page-image digital libraries;system support for name authority control problem in digital libraries;implementation of work-based searching in a multimedia digital library;approaching the problem of multi-lingual information retrieval and visualization in Greek and Latin and old norse texts;building interoperability for united kingdom historic environment information resources;a web services interface for a digital library resource;a comparison of text and shape matching for retrieval of online 3d models;corpus-based query expansion in online public access catalogs;automated indexing with restricted random walks on large document sets;annotations in digital libraries and collaboratories - facets, models and usage;in search of document value-ness for recommendation;building a national digital library of Australian music and content-based retrieval in digital music libraries.
Ultra Wide-Band Time-Hopping Impulse Radio (UWB-TH-IR) creates a UWB signal by the continuous repetition me of sub-nanosecond wide bandwidth pulses which are pseudo randomly time hopped. A simple receiver consisting o...
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ISBN:
(纸本)0780383737
Ultra Wide-Band Time-Hopping Impulse Radio (UWB-TH-IR) creates a UWB signal by the continuous repetition me of sub-nanosecond wide bandwidth pulses which are pseudo randomly time hopped. A simple receiver consisting of one or more one-shot correlators triggered at the precise moment the received pulse arrives at the receiver can be used to detect the signal. This structure makes it necessary to initially synchronise to the incoming signals pseudo random time-hopping code. The combination of the low duty cycle waveform and the presence of a pseudo random time-hopping code can make the search space large, resulting in long synchronisation times. This paper proposes a so called Quick Search (QS) method which significantly reduces the search time by making more efficient use of the context of each observation. When compared to the Exhaustive Search (ES) method the algorithm proposed here exhibits an acceptable degradation in detection performance and can reduce the search time by a factor equal to the code length. Performance is bench marked against the ES method along with the Linear Search (LS), Random Search (RS) and Binary Reverse Search (BRS) thresholded algorithms.
In this paper, we present three extended dynamic data replication schemes for mobile ad-hoc networks. We improve upon existing replication algorithms by considering aperiodic updates and integrating user profiles cons...
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The paper discusses the current status of progress of the on-going EU IST BUSMAN project (Bringing User Satisfaction to Media access Networks), which now approaches the milestone of its 2nd year running. The issues ex...
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The work presents an efficient video contentaccess control algorithm which has no effect on the compression efficiency and provides a good level of security. The algorithm works in such a way that the number of bits ...
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The work presents an efficient video contentaccess control algorithm which has no effect on the compression efficiency and provides a good level of security. The algorithm works in such a way that the number of bits generated for all (8/spl times/8) blocks remains the same for the scrambled and the original image. Scrambling is achieved by intra-level shifting and shuffling the coefficients, without disturbing the statistical and spatial properties of the image/video. The proposed algorithm is easy to implement and can be made immune to plain text attacks with an insignificant overhead.
Web usage mining techniques, such as clustering of user sessions, sore often used to identify Web user access patterns. However, to understand the factors that lead to common navigational patterns, it is necessary to ...
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The shot based clustering and retrieval is very important for video database organization and access. We can take advantage of semantic clustering to enhance the performance of traditional content-based video retrieva...
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ISBN:
(纸本)0780384032
The shot based clustering and retrieval is very important for video database organization and access. We can take advantage of semantic clustering to enhance the performance of traditional content-based video retrieval. In this paper, text feature and color feature are first extracted directly from shots. Subsequently, a two-level hierarchical clustering structure that provides indexing scheme for retrieval is constructed by incorporating text and color features. The top level is clustered by text features while the bottom level is clustered by color features. The constructed structure is then used for the cluster-based retrieval. The effectiveness and efficiency of our approach are demonstrated by the experimental results in retrieving and ranking similar video shots.
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