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检索条件"机构=Multimedia InfoRmation Systems and Advanced Computing Laboratory"

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A new video images text localization approach based on a fast hough transform

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3rd International Conference on Image Analysis and Recognition, ICIAR 2006

作者： Bouaziz, Bassem Mahdi, Walid Hamadou, Abdelmajid Ben MIRACL Multimedia InfoRmation System and Advanced Computing Laboratory Higher Institute of Computer Science and Multimedia BP 1030 Sfax 69042 Tunisia

ISBN: (纸本)3540448918

The amount of digital video data is increasing over the world. It highlights the need for efficient algorithms that can retrieve this data by content. The full use of this media is currently limited by the opaque nature of the video which prevents content-based access. To facilitate video indexing and browsing, it is essential to allow non-linear access, especially for long programs. This can be achieved by identifying semantic description captured automatically from video story structure. Among these descriptions, text within video frames is considered as rich features that enable a good way for browsing video. In this paper we propose a fast Hough transformation based approach for automatic video frames text localization. Experimental results, that we drove on a large sample of video images issued from portions of news broadcasts, sports program, advertisements and movies, shows that our method is very efficient, capable to locate text regions with different character sizes, directions and styles even in case of complex image background. © Springer-Verlag Berlin Heidelberg 2006.

关键词： Image analysis

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A nanoscale memory interface scheme based on hierarchical memory mapping

A nanoscale memory interface scheme based on hierarchical me...

引用

2006 6th IEEE Conference on Nanotechnology, IEEE-NANO 2006

作者： Venkatasubramanian, Girish Figueiredo, Renato J. Advanced Computing and Information Systems Laboratory University of Florida Gainesville FL 32611 United States

ISBN: (纸本)1424400783

This paper presents a nanoscale to microscale interface for crossbar based memory architectures based on multi-stage memory mappers. By designing each stage carefully and by adding sufficient number of stages the total interface module size can be reduced to a size that is 3% to 5% the size of a one-stage mapper implemented in microscale. Thus most of the area advantage in using nanoscale memories can be retained. This architecture is also technology-independent and fault-tolerant. We have developed a model which relates the various design parameters to the size of the interface module and examined these design issues in depth. © 2006 IEEE.

关键词： Nanowires

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IP over P2P: Enabling self-configuring virtual IP networks for grid computing 20

IP over P2P: Enabling self-configuring virtual IP networks f...

引用

20th IEEE International Parallel and Distributed Processing Symposium, IPDPS 2006

作者： Ganguly, Arijit Agrawal, Abhishek Oscar Boykin, P. Figueiredo, Renato Advanced Computing and Information Systems Laboratory University of Florida Gainesville FL - 32601 United States

ISBN: (纸本)1424400546

Peer-to-peer (P2P) networks have mostly focused on task oriented networking, where networks are constructed for single applications, I.e. file-sharing, DNS caching, etc. In this work, we Introduce IPOP, a system for creating virtual IP networks on top of a P2P overlay. IPOP enables seamless access to Grid resources spanning multiple domains by aggregating them Into a virtual IP network that Is completely Isolated from the physical network. The virtual IP network provided by IPOP supports deployment of existing IP-based protocols over a robust, self-configuring P2P overlay. We present Implementation details as well as experimental measurement results taken from LAN, WAN, and Planet-Lab tests. © 2006 IEEE.

关键词： Distributed computer systems

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Nanocomputing with probabilistic logic

Nanocomputing with probabilistic logic

引用

2006 6th IEEE Conference on Nanotechnology, IEEE-NANO 2006

作者： Fortes, José A. B. Advanced Computing and Information Systems Laboratory Department of Electrical and Computer Engineering University of Florida Gainesville FL United States

ISBN: (纸本)1424400783

This presentation considers the impact on logic design and computing of the fundamental unreliability of nanoscale device technologies. In general, these technologies will provide implementations of logic gates and circuits where logic levels are "0" or "1" with some probability related to the error rates of gates and interconnect. In this context, reliable circuit design becomes a problem of maximizing the probability of the correct logic levels of the output of the function implemented by the circuit for the relevant inputs. This presentation reviews some recent results and proposes new ideas for the characterization and design of probabilistic logic. Since the early days of computing it has been well known that the design of reliable arbitrary logic circuits is only possible if individual gates have error rates below some threshold which varies with gate functionality. Using bifurcation analysis of probabilistic gate models, thresholds for different types of gates are derived and their implications for logic design are revisited. Similar techniques are used to analyze multi-gate circuits and the functions they implement. The resulting thresholds provide reliability bounds for the circuits. Also considered are several proposed models for either analyzing reliability or maximizing it. Reference is also made to circuits designed to implement probabilistic computations. © 2006 IEEE.

关键词： Nanoelectronics

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ALiFE: Automatic Lip Feature Extraction: A New Approach for Speech Recognition Application

ALiFE: Automatic Lip Feature Extraction: A New Approach for ...

引用

International Conference on information and Communication Technologies: From Theory to Applications, ICTTA

作者： S. Werda W. Mahdi M. Tmar A. Ben Hamadou MIRACL: Multimedia Information systems and Advanced Advanced Computing Laboratory Higher Institute of Computer Computer Science and Multimedia Sfax Tunisia

Actually several domains `general public' are concerned by the utility of visual speech information such as e-learning, tele-assistance, human-machine interaction, etc. The visual information helpfulness is more imperative among people with special needs. We can imagine for example, a dependant people ordered his machine with an easy lip movement or by a simple syllable pronunciation. More than, hard of hearing people normally compensate for their hearing problems by lip-reading as well as listening to the person they are talking to. Therefore, it's very important to create an automatic lip-reading system that resolve partially people hearing problem. We presents in this paper a new hybrid approach named ALiFE to automatically localize lip feature points in the speaker's face and to carry out a spatial-temporal tracking of these points. ALiFE prototype is evaluated with a multiple speakers under natural conditions. In order to approve our lip feature extraction approach, we have created a specific audio-visual corpus. The final results show the different configuration of the mouth through visemes. Later on these visemes is associated to relatively precise physical measures

关键词： Feature extraction Speech recognition Data mining Lips multimedia systems multimedia computing Auditory system Mouth Irrigation Face detection

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WOW: Self-Organizing Wide Area Overlay Networks of Virtual Workstations

WOW: Self-Organizing Wide Area Overlay Networks of Virtual W...

引用

International Symposium on High Performance Distributed computing

作者： A. Ganguly A. Agrawal P.O. Boykin R. Figueiredo Advanced Computing and Information Systems Laboratory University of Florida Gainesville FL USA

This paper describes WOW, a distributed system that combines virtual machine, overlay networking and peer-to-peer techniques to create scalable wide-area networks of virtual workstations for high-throughput computing. The system is architected to: facilitate the addition of nodes to a pool of resources through the use of system virtual machines (VMs) and self-organizing virtual network links; to maintain IP connectivity even if VMs migrate across network domains; and to present to end-users and applications an environment that is functionally identical to a local-area network or cluster of workstations. We describe a novel, extensible user-level decentralized technique to discover, establish and maintain overlay links to tunnel IP packets over different transports (including UDP and TCP) and across firewalls. We also report on several experiments conducted on a testbed WOW deployment with 118 P2P router nodes over PlanetLab and 33 VMware-based VM nodes distributed across six firewalled domains. Experiments show that the latency in joining a WOW network is of the order of seconds: in a set of 300 trials, 90% of the nodes self-configured P2P routes within 10 seconds, and more than 99% established direct connections to other nodes within 200 seconds. Experiments also show that the testbed delivers good performance for two unmodified, representative benchmarks drawn from the life-sciences domain. The testbed WOW achieves an overall throughput of 53 jobs/minute for PBS-scheduled executions of the MEME application (with average single-job sequential running time of 24.1s) and a parallel speedup of 13.5 for the PVM-based fastDNAml application. Experiments also demonstrate that the system is capable of seamlessly maintaining connectivity at the virtual IP layer for typical client/server applications (NFS, SSH, PBS) when VMs migrate across a WAN

关键词： Workstations Peer to peer computing Voice mail Virtual machining Computer networks Distributed computing Local area networks TCPIP Testing Virtual manufacturing

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A Nanoscale Memory Interface Scheme based on Hierarchical Memory Mapping

A Nanoscale Memory Interface Scheme based on Hierarchical Me...

引用

IEEE Conference on Nanotechnology

作者： G. Venkatasubramanian R.J. Figueiredo Advanced Computing and Information Systems Laboratory University of Florida Gainesville FL USA

关键词： Computer interfaces information systems Laboratories Space technology Fault tolerance Circuits Memory architecture Nanoscale devices Stochastic processes Doping

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IP over P2P: enabling self-configuring virtual IP networks for grid computing 06

IP over P2P: enabling self-configuring virtual IP networks f...

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International Symposium on Parallel and Distributed Processing (IPDPS)

作者： A. Ganguly A. Agrawal P.O. Boykin R. Figueiredo Advanced Computing and Information Systems Laboratory University of Florida Gainesville FL USA

ISBN: (纸本)9781424400546

Peer-to-peer (P2P) networks have mostly focused on task oriented networking, where networks are constructed for single applications, i.e. file-sharing, DNS caching, etc. In this work, we introduce IPOP, a system for creating virtual IP networks on top of a P2P overlay. IPOP enables seamless access to grid resources spanning multiple domains by aggregating them into a virtual IP network that is completely isolated from the physical network. The virtual IP network provided by IPOP supports deployment of existing IP-based protocols over a robust, self-configuring P2P overlay. We present implementation details as well as experimental measurement results taken from LAN, WAN, and Planet-Lab tests

关键词： IP networks Grid computing Peer to peer computing Application software Robustness Network address translation Protocols Routing Application virtualization Virtual private networks

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Hybrid evolutionary algorithm with insertion heuristics - For the flexible Job Shop Problem

Hybrid evolutionary algorithm with insertion heuristics - Fo...

引用

3rd International Conference on Service systems and Service Management

作者： Neifar, Fredj Gzara, Mariem Moukrim, Aziz Loukil, Taicir Multimedia InfoRmation Systems and Advanced Computing Laboratory (MIRACL) Sfax 3018 route M'harza Km 1.5 Tunisia UTC Laboratoire Heudiasyc Centre de Recherches de Royallieu 60205 Compiègne BP 20529 France Laboratoire de Gestion Industrielle et Aide À la Décision (GIAD) Sfax 3018 route de l'aérodrome Km 4.5 Tunisia

ISBN: (纸本)1424404509

This paper presents a hybrid evolutionary algorithm for the flexible job shop problem. We developed and tested new genetic operators. Insertion heuristics have been incorporated into crossover and mutation operators in order to enhance the performance of the genetic search. The approach is tested on a set of standard instances taken from the literature. The empirical experiments are promising and validate the effectiveness of the proposed algorithm.

关键词： scheduling flexible job shop problem evolutionary algorithm insertion heuristics

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UNPCC: A novel unsupervised classification scheme for network intrusion detection

UNPCC: A novel unsupervised classification scheme for networ...

引用

18th IEEE International Conference on Tools with Artificial Intelligence, ICTAI 2006

作者： Xie, Zongxing Quirino, Thiago Shyu, Mei-Ling Chen, Shu-Ching Chang, LiWu Department of Electrical and Computer Engineering University of Miami Coral Gables FL 33124 United States Distributed Multimedia Information System Laboratory School of Computing and Information Sciences Florida International University Miami FL United States Center for High Assurance Computer Systems Naval Research Laboratory Washington DC United States

ISBN: (纸本)0769527280

The development of effective classification techniques, particularly unsupervised classification, is important for real-world applications since information about the training data before classification is relatively unknown. In this paper, a novel unsupervised classification algorithm is proposed to meet the increasing demand in the domain of network intrusion detection. Our proposed UNPCC (Unsu-pervised Principal Component Classifier) algorithm is a multi-class unsupervised classifier with absolutely no requirements for any a priori class related data information (e.g., the number of classes and the maximum number of instances belonging to each class), and an inherently natural supervised classification scheme, both which present high detection rates and several operational advantages (e.g., lower training time, lower classification time, lower processing power requirement, and lower memory requirement). Experiments have been conducted with the KDD Cup 99 data and network traffic data simulated from our private network testbed, and the promising results demonstrate that our UNPCC algorithm outperforms several well-known supervised and unsupervised classification algorithms. © 2006 IEEE.

关键词： Intrusion detection

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