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检索条件"任意字段=Conference on Multimedia Computing and Networking"

共 2919 条记录，以下是211-220 订阅

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A CORBA-based platform for distributed multimedia applications

A CORBA-based platform for distributed multimedia applicatio...

引用

1997 conference on multimedia computing and networking

作者： Blum, C Molva, R Institut Eurécom BP 193 Sophia-Antipolis F-06904 France

ISBN: (纸本)0819424315

As distributed multimedia applications are starting to be offered as services in enterprise and residential cable networks, there is a growing interest in platforms that provide a standard framework for the development and deployment of these applications. Key issues in platform design are service diversity, service portability and interoperability of user terminal equipment, We propose a platform architecture for the provision of multimedia communication services which logically separates application processing from media processing. Applications are installed in application pools from where they control a set of communicating multimedia terminals. Application-specific intelligence is downloaded into the terminals in the form of Tcl/Tk or Java scripts that generate graphical user interfaces, control media processing components, and communicate with the application in the pool. The platform architecture is based on CORBA and is defined as an extensible set of IDL interfaces for control and stream interfaces for multimedia communication. The platform supports application development with high-level programming interfaces.

关键词： networked multimedia applications teleconferences CORBA TINA IMA MSS

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ConEx: Context exchange in MANETs for real time multimedia

ConEx: Context exchange in MANETs for real time multimedia

引用

International conference on networking, International conference on Systems andInternational conference on Mobile Communications and Learning Technologies, ICN/ICONS/MCL'06

作者： Ruwini Kodikara, E. Zaslavsky, Arkady Åhlund, Christer Caulfield School of IT Monash University 900 Dandenong Road Caulfield East Melbourne Vic. 3145 Australia Division of Mobile Networking and Computing Luleå University of Technology 931 87 Skellefteå Sweden

ISBN: (纸本)0769525520

MANETs are important and integral part of next generation wireless networking. Real time multimedia communication over MANETs is challenging due to reasons like network topology changes, limitations of wireless links and demanding requirements of multimedia. Channel adaptivity is adopting applications to the dynamic and unpredictable network conditions. QoS adaptivity is adopting lower layers to multimedia application requirements. The novel cross layer context exchange approach called ConEx, presented in this paper improves the efficiency of this two-way information exchange. This paper focuses on adaptive multimedia applications over mobile ad hoc networks, which addresses the challenges of multimedia applications. ConEx uses publish-subscribe event notification system for vertical context exchange across layers of the mobile host and horizontal context exchange across the MANET. ConEx architecture and implementation issues are discussed in this paper. © 2006 IEEE.

关键词： multimedia systems

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Dagster: Contributor-aware end-host multicast for media streaming in heterogeneous environment

Dagster: Contributor-aware end-host multicast for media stre...

引用

conference on multimedia computing and networking 2005

作者： Ooi, WT Natl Univ Singapore Dept Comp Sci Singapore 117548 Singapore

ISBN: (纸本)0819456535

We present Dagster, an end-host multicast scheme for delivering multimedia streams. Unlike previous schemes, Dagster does not constrain the amount of bandwidth a node must donate. Instead, it relies on a novel incentive scheme to encourage nodes to contribute more bandwidth to improve the total capacity of the system. The key idea behind the incentive is that Dagster allows a node with more donated bandwidth to preempt another node in the system. Dagster also allows a host to receive from multiple parents at the same time, thus is more resilient to node failures. Our simulation results show that Dagster's design leads to low rejection rate, high resilience to failure and smaller diameter. Furthermore, nodes that donate more bandwidth have lower rejection rate and are positioned fewer overlay hops away from the source, providing incentives for nodes to increase their contribution.

关键词： Receivers Video multimedia Computer programming Electronic support measures Computer simulations Computer science computing systems Electronic imaging Internet

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Managing context for Internet videoconferences: The multimedia Internet recorder and archive

Managing context for Internet videoconferences: The multimed...

引用

conference on multimedia computing and networking 2000

作者： Castro, P Mani, M Mathur, S Muntz, R Univ Calif Los Angeles Dept Comp Sci Los Angeles CA 90024 USA

ISBN: (纸本)0819435872

multimedia objects are difficult to query since much of the content of the object is beyond the interpretive capabilities of a computer. State-of-the-art multimedia content-based retrieval systems focus on post mortem analysis of the underlying data objects to derive semantic information. With the emergence of inexpensive I/O technology we can shift some of the burden of this content analysis to "smart" devices that can capture context information about a multimedia object. Context information includes the geographical location an object is created or used, identities of users, activities of users and other applications, etc. Such information can be used to index the multimedia objects to perform content-based queries with minimal signal processing. We are concerned with the design and implementation of a context-based retrieval system for IP-multicast videoconferences. The multimedia Internet Recorder and Archive (MIRA) models a videoconference as a Bayesian network that describes bounds on "cost" and "reliability" for a recording task. Context about a videoconference is derived from monitoring the RTCP control channel and messaging events that occur among meeting participants. MIRA creates an index of context information as an XML document that is used by clients to visualize, browse, and retrieve multimedia objects. MIRA also creates event-based transcripts as summaries of meetings. These transcripts are available over the WWW.

关键词： multimedia database context computing multicast videoconference Bayesian networks

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multimedia computing and networking 2001

Multimedia computing and networking 2001

引用

multimedia computing and networking 2001

This Volume 4312 of the conference proceedings contains 17 papers. Topics discussed include video analysis and processing, operating systems and resource management, networking and applications, authoring, content man... 详细信息

关键词： multimedia systems

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multimedia NETWORK PROTOCOLS - WHERE ARE WE

MULTIMEDIA NETWORK PROTOCOLS - WHERE ARE WE

引用

conference on multimedia computing and networking 1995

作者： FERRARI, D UNIV CALIF BERKELEY TENET GRPBERKELEYCA 94720

ISBN: (纸本)0819417645

The trend toward the integration, into a single packet-switching or cell-switching network, of services intended to satisfy the different needs of multiple types of traffic calls for the design of protocols for multimedia communication. An essential prerequisite for such a design is that a service model be chosen; in other words, the services to be offered by the network must be selected and specified in detail. This paper presents the service models proposed, of being developed, by two groups within the Internet Community, by the ATM community, and by the Tenet Group; it also compares them, focusing on their common characteristics and their possible convergences, hence unveiling the outlines of the service models the first integrated-services networks to be deployed will implement, if the extensive experiments that are now needed will not be unsuccessful.

关键词： multimedia PROTOCOLS INTEGRATED-SERVICES NETWORKS INTERNET ATM TENET SERVICE MODELS

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Mitigating the Asymmetric Interests Among Peers in Peer-to-Peer Video-on-Demand Systems

Mitigating the Asymmetric Interests Among Peers in Peer-to-P...

引用

International conference on computing, networking and Communications (ICNC)

作者： Sarkar, Saikat Wang, Mea Univ Calgary Dept Comp Sci Calgary AB T2N 1N4 Canada

ISBN: (纸本)9781467300094

In recent years, Peer-to-Peer (P2P) multimedia streaming has become an alternative to cable/satellite TV services. Many P2P streaming applications further provide users with DVD-like operations: play, pause, chapter selection, fast forward, and rewind. Such a real-time interactive multimedia streaming system is commonly referred to as P2P Video-on-Demand (VoD), and poses a unique challenge in providing smooth playback and seamless interaction over the Internet. In a typical P2P VoD system, a peer may play an arbitrary video segment at any time, which leads to asymmetric interests among peers. On one hand, the asymmetric interests reduce the incentives for peers to cooperate with each other. On the other hand, the asymmetric interests create more opportunities for content sharing. In this paper, we propose Coded VoD, a new approach for P2P VoD streaming, that exploits the content sharing opportunities in P2P VoD to address the incentive issue. Our experimental results show that Coded VoD achieves a smoother playback and faster responses to DVD-like operations by utilizing a network-coding-based content prefetching mechanism.

关键词： Internet media streaming network coding peer-to-peer computing real-time systems video on demand

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An Adaptive Feedback Control Scheme for Resource Allocation in Wireless Ad Hoc Networks

An Adaptive Feedback Control Scheme for Resource Allocation ...

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3rd International conference on Wireless Communications, networking and Mobile computing (WiCOM 2007)

作者： Yi, Chen Ge, Gao Hu Ruimin Wuhan Univ Natl Engn Res Ctr Multimedia Software Wuhan Peoples R China Cent China Normal Univ Dept Comp Sci Wuhan Peoples R China Wuhan Univ Natl Engn Res Ctr Multimedia Software Wuhan Peoples R China

ISBN: (纸本)9781424413119

A novel control-theoretic scheme is presented for resource allocation in wireless Ad Hoc networks based on virtual price. The degree of congestion on a wireless link can be symbolized an aggregate virtual price along a route, which depends mostly on the wireless node's queue occupancy. This approach adopts an adaptive approach to control the transmission rate at the source, named ASR controller. The object is to optimize the resource allocation dynamically through the transmission rate adjustment and stabilized the queue size of wireless links. The basic control theory approach for the algorithm is been presented, specifically z-transmission and Jury stability are used to achieve the stability. The performance of simulation indicates that the proposed scheme can achieve the goal of optimal channel capacity sharing among multi-hop flows and sharing bandwidth fairly.

关键词： virtualprice wireless network resource allocation

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Application of Case-oriented Evidence Mining in Forensic computing

Application of Case-oriented Evidence Mining in Forensic Com...

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1st International conference on multimedia Information networking and Security (MINES 2009)

作者： Zhang, Jun Wang, Lina Wuhan Univ Comp Sch Wuhan 430079 Peoples R China

ISBN: (纸本)9780769538433

In this paper, we proposed a new digital forensic process model, named COEM (case-oriented evidence mining model), along with its approaches, top-down. The model consists of sets of tasks described at two levels of abstraction: case (from requirement to finding) and data (from general to specific). The COEM facilitates analysis in a viewpoint of case instead of data, and gives investigators a more natural and rational perspective. As an example, we illustrate its application with a digital crime case accused of distributing pornographic materials through WAP sites in China.

关键词： Forensic computing Digital Evidence Evidence Mining Top-down approaches

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multimedia INTERACTIONS AND HOW THEY CAN BE REALIZED

MULTIMEDIA INTERACTIONS AND HOW THEY CAN BE REALIZED

引用

conference on multimedia computing and networking 1995

作者： DINGELDEIN, D COMP GRAPH CTR D-64283 DARMSTADTGERMANY

ISBN: (纸本)0819417645

This paper describes an approach to an object model for multimedia interactions. multimedia interactions differ from common interactions in the requirement for sophisticated analysis of input data and that such interactions are usually time-based. They can be modeled as an extension of pure multimedia presentations (as we did). The ideas and concepts for multimedia interactions are subject to research in several computer science domains like visual computing, Artificial Intelligence, pattern recognition and image analysis. The proposed object model is a new approach to allow the arrangement of the results from different research domains in an object-framework to make them usable in a real-world multimedia toolkit. As far as it is known by the author, no other such approach exists. By extending the existing object model for multimedia presentations of the multimedia user interface toolkit MME, it is possible to smoothly integrate interactions into our system. The structure of the paper is as follows: In the first part, the notion of multimedia interactions is introduced, different types and examples of such interactions are given together with a glance at related work in this area. In the second part, the object model for multimedia interactions is presented, being closely related to the object model of MME. The remaining parts of the paper deal with a brief description of some interesting implementation issues and future developments both for the object model and the implementation.

关键词： multimedia Video 3D image processing Cameras Image processing Human-machine interfaces Systems modeling Image analysis Video processing Visualization

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