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检索条件"任意字段=Conference on Multimedia Content Access - Algorithms and Systems"

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IPTV distribution network access system using WiMAX and WLAN technologies

IPTV distribution network access system using WiMAX and WLAN...

引用

4th Edition of the UPGRADE-CN Workshop on Use of P2P, GRID and Agents for the Development of content Networks, UPGRADE-CN'09, Co-located with the 2009 International Symposium on High Performance Distributed Computing conference, HPDC'09

作者： Garcia, Miguel Lloret, Jaime Edo, Miguel Lacuesta, Raquel Communications Department Polytechnic University of Valencia Camino Vera s/n 46022 Valencia Spain Systems Engineering and Computer Department Zaragoza University C/Ciudad Escolar s/n 44003 Teruel Spain

ISBN: (纸本)9781605585918

The mobility and ubiquity for any type of device to access the IPTV network must be supplied by the service provider. The minimum bandwidth required in the access network to provide IPTV services jointly with the necessity to guarantee the Quality of Experience (QoE) to the user makes the need of algorithms to combine different wireless standards and technologies in the access network. In this paper, we propose a system that decides which type of wireless access network to connect with (for dual-band and tri-band devices) depending on the requirements of the IPTV client, the available networks, and some network parameters, such as the number of loss packets and packet delay, to provide the maximum QoE to the customer. The measurements taken in a real environment from the wireless networks allow us to know the weight of the parameters in the proposed algorithm. Copyright 2009 ACM.

关键词： IPTV

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Intelligent Adaptation Model Based on MPEG-21 Framework

Intelligent Adaptation Model Based on MPEG-21 Framework

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International conference on Embedded and multimedia Computing (EM-Com)

作者： Svetlana Kim Yongik Yoon Department of Multimedia Science Sookmyung Women's University Seoul South Korea

Video adaptation has been introduction to tailor the same video to different derived user contexts to allow end users with different access network, client device and user profiles to access the same information source. Therefore, there is a need for the increase of automated auditing and intelligent reporting mechanisms for the download digital contents. This paper presents a proposed architecture of an intelligent adaptation model (IAM). The objective of this system investigation into the potential security issues involved in content adaptation, especially video content adaptation, in multimedia intelligent system. For delivery video content we suggest the intelligent adaptation model that uses the digital item description in MPEG-21 multimedia framework.

关键词： Adaptation model Streaming media multimedia systems Data security Hidden Markov models Quality of service Gunshot detection systems Motion pictures Intelligent networks Context modeling

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State of the art and challenges on peer-to-peer simulators

State of the art and challenges on peer-to-peer simulators

引用

5th International conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2009

作者： Dengyi, Zhang Xuhui, Chen Hongyun, Yang Computer School Wuhan University Wuhan Hubei China National Engineering Research Center for Multimedia Software Wuhan University Wuhan Hubei China

ISBN: (纸本)9781424436934

P2P technology is promising for large-scale content distribution over the Internet. Evaluating and analyzing new and existing algorithms and protocols is a key issue for developers of P2P systems. Simulation has become one of the most popular tools comparing to mathematical modeling, analytical modeling and real-time monitoring. In this paper, we overview the large number of P2P simulators developed in recent years according to some criterias. Since the poor state of existing P2P simulators causes much published research to make use of custom built simulators, which further complicates the task of validating research and reproducing results. It is time to build a consensus on the common platform for P2P research. ©2009 IEEE.

关键词： Simulators

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A Web Services Orchestration Solution for Semantic multimedia Indexing and Retrieval

A Web Services Orchestration Solution for Semantic Multimedi...

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International conference on Complex, Intelligent and Software Intensive systems, CISIS

作者： Mihaela Brut Florence Sedes Ana Maria Manzat Alexandru loan Cuza University Iasi Romania Institut de Recherche en Informatique de Toulouse Paul Sabatier University Toulouse France Institut de Recherche en Informatique de Toulouse Paul Sabatier University France

ISBN: (纸本)9781424435692

In this article we are presenting a solution for the problem of combining various indexation algorithms in order to acquire a semantic multimedia indexation and to provide responses to the user complex queries. The challenge of this problem concerns the big heterogeneity of the multimedia indexation algorithms and the weak semantic aspect they address. Our solution considers a generic interface for the indexation algorithms, an implementation as Web services, as well as a semantic description in terms of WSMO (Web Service Modeling Ontology) of their functionality and orchestration. Original contribution of the article concerns the idea of organizing the various multimedia metadata types into a generic structure,used to express the user queries, the algorithms' generic interface, as well as the algorithms' WSMO metadata. This approach facilitates the definition of algorithm combination rules, and enables the reduction of the multimedia retrieval task to a metadata matching process.

关键词： Web services Indexing multimedia systems Vocabulary Competitive intelligence Software systems Information retrieval content based retrieval Software algorithms Ontologies

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Utilization of multi-radio access networks for video streaming services

Utilization of multi-radio access networks for video streami...

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2009 IEEE Wireless Communications and Networking conference, WCNC 2009

作者： Yaver, Ali Koudouridis, Georgios P. Stockholm Sweden Huawei Technologies Sweden R and D Center Kista Sweden

ISBN: (纸本)9781424429486

In comparison to traditional voice based circuit switched mobile systems, the multimedia content puts forward significantly strict quality of service requirements. In this perspective, a noticeable proportion of contemporary research has been driven towards exploring the possibilities of simultaneously utilizing geographically co-existing mobile networks belonging to a wide range of wireless technologies. This paper evaluates such co-existence by means of a novel macro diversity scheme referred to as Multi Radio Transmission Diversity (MRTD) which exploits the dynamic cooperation between the networks at the radio link level. Relevant QoS parameters for an MPEG4 encoded video streaming service have been analyzed by means of simulations in a hybrid network topology consisting of IEEE 802.11b WLAN and UMTS HSDPA. The performance gains have been observed for various load and radio propagation conditions in comparison to a benchmark system which is not capable of utilizing such cooperation between multiple network interfaces. © 2009 IEEE.

关键词： Radio transmission

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Proceedings of the 8th WSEAS International conference on Data Networks, Communications, Computers, DNCOCO '09

Proceedings of the 8th WSEAS International Conference on Dat...

引用

8th WSEAS International conference on Data Networks, Communications, Computers, DNCOCO '09

ISBN: (纸本)9789604741342

The proceedings contain 37 papers. The topics discussed include: stable protocols for the medium access control in wireless networks;new approaches of parallel calculus in groups of firms;mathematical theory of information technology;AI, granular computing, and automata with structured memory;using cloud computing for E-Learning systems;quality model for M-Learning applications;robustness of information systems and technologies;using some web content mining techniques for Arabic text classification;a modified C-Means clustering algorithm;new implementation of unsupervised ID3 algorithm (NIU-ID3) using Visual ***;distributed algorithms for power saving optimization in sensor network;secure automatic ticketing system;and secure distribution of confidential information via self-destructing data.

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Usage Control Based on Windows Kernel Hook

Usage Control Based on Windows Kernel Hook

引用

International conference on Information and multimedia Technology (ICIMT)

作者： Yulin Wang Yang Shen Jian Pan International School of Software Wuhan University of China Wuhan China

Digital rights management systems (DRMS) are supposed to protect copyrights of the precious content for content provider. Besides access control, usage control focuses on how consumers use the digital works and prevents their content from being copied and distributed illegally. This paper introduces a technique called Windows Kernel Hook (WKH) to carry out the goal and protect the digital content from being replicated and stored. Windows Kernel Hook(WKH) has been implemented in C++ through hooking the system service dispatch table (SSDT) and adopted to Adobe Reader. The result indicates that this technique has the capabilities to solve the problem and potentials to contribute to a compatible DRMS on Windows NTs.

关键词： Kernel Protection Licenses content management Internet Law Legal factors multimedia systems Control systems conference management

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A Dynamic Conditional access System for IPTV multimedia systems

A Dynamic Conditional Access System for IPTV Multimedia Syst...

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International conference on systems and Networks Communications (ICSNC)

作者： Jinyoung Moon Jungtae Kim Jongyoul Park Euihyun Paik Kwangro Park Green Computing Research Department Electronics and Telecommunications Research Institute Daejeon South Korea

An IPTV system that transmits contents through an IP network needs to adopt a conditional access system allowing only authorized subscribers to view premium content as in other Pay-TV systems. IPTV systems adopting one of conditional access systems provided by a specific major vendor have a difficulty in changing the conditional access system loaded on a set-top box or on a removable hardware device, such as Smart card. However, a software download scheme through an IP network enables an IPTV set-top box to change the existing conditional access system in a secure way. This paper proposes a dynamic conditional access system for an IPTV set-top box that securely downloads cryptographic software and dynamically executes the cryptographic software when it is required. Therefore, the proposed system enables an IPTV multimedia system to provide seamless conditional access services to IPTV subscribers without rebooting the IPTV set-top box or replacing a hardware security device while changing the running cryptographic software.

关键词： IPTV multimedia systems

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A Secure Solution for Ubiquitous multimedia Broadcasting

A Secure Solution for Ubiquitous Multimedia Broadcasting

引用

IEEE International conference on Communications (ICC)

作者： S. Lian Y. Dong H. Wang France Telecom Research and Development Orange Laboratories Beijing China

Ubiquitous multimedia applications are becoming more and more popular. However, the solutions that confirm content and interaction security in these applications are still open issues because of various network convergences and device interconnections. This paper investigates a ubiquitous multimedia scheme and proposes a secure service solution. In the ubiquitous scheme, the multimedia content is encoded with scalable video coding and broadcasted via digital video broadcasting for handheld terminals (DVB-H) to mobile terminals, the access right is transmitted by global system for mobile (GSM) channel, and the media content and access right can also be transmitted from mobile terminals to home TV through WiFi based wireless local area network. The proposed secure solution supports three kinds of business models by using various content encryption modes and secure interaction protocols. The solution's security is evaluated and discussed. Since few works have been done to solve this problem, this paper is expected to attract more researchers.

关键词： Digital multimedia broadcasting multimedia communication multimedia systems Digital video broadcasting Permission Video coding TV broadcasting GSM Wireless LAN Cryptography

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Compressed video stream watermarking for peer-to-peer based content distribution network

Compressed video stream watermarking for peer-to-peer based ...

引用

IEEE International conference on multimedia and Expo (ICME)

作者： Dekun Zou Nicolas Prigent Jeffrey Bloom Thomson Corporate Research USA

Peer-to-peer content distribution provides high network throughput with relatively low server cost and scales better than traditional content distribution networks with respect to the number of clients. It is ideal for applications requiring large data transfer such as video-on-demand or live video streaming. Traditional forensic watermarking systems are based on the assumption that each user receives a unique copy of video content to allow for tracking of pirated content back to the original recipient. However, P2P-based distribution systems are typically designed to supply identical copies to each user. This paper proposes a new watermarking framework that is suitable for P2P-based content delivery systems. Watermarking algorithms that are appropriate for this system are also discussed.

关键词： Video compression Streaming media Watermarking Peer to peer computing Automatic voltage control Protection Costs Telecommunication traffic Entropy Transform coding

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