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

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Realizing unified service experience with SaaS on SOA

Realizing unified service experience with SaaS on SOA

引用

International conference on Communication systems Software and Middleware (COMSWARE)

作者： Jithesh Sathyan Krishnananda Shenoy Infosys Technologies Limited India

The rapid spread of IP-based access technologies and the move towards Core Network Convergence with IMS has led to an explosion in multimedia content delivery across packet networks. IMS provides mobile and multimedia services to the customer along with fixed networks support leading to mobile and fixed convergence. The use of open standard IP protocols, defined by the IETF, allows IMS to easily introduce new services. This transition has led to a much wider and richer service experience, though service experience is limited to the services offered by the service provider subscribed by the customer.

关键词： Service oriented architecture Assembly Application software Explosions access protocols Customer satisfaction Spine Quality of service Scalability Terminology

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A discrete direct retrieval model for image and video retrieval

A discrete direct retrieval model for image and video retrie...

引用

2008 International conference on Image and Video Retrieval, CIVR 2008

作者： Feng, Shaolei Manmatha, R. Integrated Data Systems Department Siemens Corporate Research Inc. Princeton NJ 08540 United States Department of Computer Science Center for Intelligent Information Retrieval Multimedia Indexing and Retrieval Group Amherst MA 01003 United States University of Massachusetts

ISBN: (纸本)9781605580708

This paper proposes a formal framework for image and video retrieval using discrete Markov random fields (MRF). The training dataset consists of images with keywords (regions are not labeled). The model is built using a discrete vocabulary of vector quantized region or point features generated from the training images. Since performance is dependent on the size of the vocabulary, a large vocabulary of a couple of million visterms is used. Such large vocabularies cannot be generated by conventional clustering algorithms so hierarchical k-means is used to generate it. Unlike many previous techniques, our MRF based model doesn't require an explicit annotation step for retrieval. The model directly ranks all test images according to the posterior probability of an image given a query. Traditionally, most models are trained by maximizing likelihood - instead this model is trained by maximizing average precision. Image and video retrieval experiments are performed on two standard datasets (a Corel dataset and a TRECVID3 dataset) which consist of 4,500 images and about 44,100 keyframes respectively. The results show that based on a large visual vocabulary the model runs extremely fast on even very large datasets while having comparable retrieval performance to the best performing (continuous feature) models. Copyright 2008 ACM.

关键词： Image retrieval

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Aryabhata Remainder Theorem for Moduli with Common Factors and Its Application in Information Protection systems

Aryabhata Remainder Theorem for Moduli with Common Factors a...

引用

International conference on Intelligent Information Hiding and multimedia Signal Processing (IIHMSP)

作者： Jen-Ho Yang Chin-Chen Chang Department of Computer Science and Information Engineering National Chung Cheng University Chiayi Taiwan Department of Information Engineering and Computer Science Feng Chia University FCU Taichung Taiwan

The Chinese Remainder Theorem (CRT) can determine an integer from its residues modulo by a set of pairwise relatively prime moduli. For the requirement of flexibility, the CRT for moduli with common factors also has been proposed to deal with the case in which the moduli are not relatively prime. However, we discover that the previous schemes of CRT for moduli with common factors are incorrect while one modulus is the least common multiple of the other one. To solve this problem, we propose a new algorithm of Aryabhata Remainder Theorem (ART) for moduli with common factors in this paper. The proposed algorithm can be applied to any kind of moduli and its computation cost is less than that of the CRT-based algorithm. In addition, we also show how to apply the proposed method to the information protection systems in this paper.

关键词： Cathode ray tubes Subspace constraints Equations Signal processing algorithms Computers access control Radio access networks

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3rd International conference on E-Business and Telecommunication Networks, ICETE 2006

3rd International Conference on E-Business and Telecommunica...

引用

International Joint conference on e-Business and Telecommunications, ICETE 2006

ISBN: (纸本)9783540707592

The proceedings contain 29 papers. The special focus in this conference is on Business and Telecommunication Networks. The topics include: Towards automated service trading;an adaptive infrastructure for secure available GRID on ad-hoc networks;variable quantity market clearing algorithms;modeling the dynamics of social networks;reputation management service for peer-to-peer enterprise architectures;a new approach for the trust calculation in social networks;spoofed ARP packets detection in switched LAN networks;efficient all-or-nothing encryption using CTR mode;proposals for iterated hash functions;secure online English auctions;using Microsoft office InfoPath to generate XACML policies;least privilege in separation kernels;a fine-grained xml access control implementation using generic security labels;design and implementation of video on demand services over a peer-to-peer multioverlay network;traffic trunk parameters for voice transport over MPLS;on-the-fly time scaling for compressed audio streams;improving multiscale recurrent pattern image coding with deblocking filtering;enhanced interaction for streaming media;an e-librarian service that yields pertinent resources from a multimedia knowledge base;a transceiver concept based on a software defined radio approach;evaluation of an orthogonal SFBC channel estimation scheme for MIMO OFDM wireless systems;image transmission with adaptive power and rate allocation over flat Fading channels using joint source channel coding;use of AGPS call data records for non-GPS terminal positioning in cellular networks and a context-aware architecture for mobile knowledge management.

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The Application of Random Layered Space-Time in TD-SCDMA System

The Application of Random Layered Space-Time in TD-SCDMA Sys...

引用

International conference on multimedia and Information Technology, MMIT

作者： Qian Zhao Zhaohua Zeng School of Communication and Information Engineering Xi''an University of Science and Technology Xi'an China

Study on the application about a new type BLAST-Random Layered Space-Time (RLST) which presents in this article used in the TD-SCDMA system. After the comparison on the result of theory and the simulation, it compares the performance of the random layered space-time with the general V-BLAST in the CDMA structure, and at the same time it compares the performance of the receiver which is using the RLST in the different channels. At last, it proves the superiority of using RLST and the exactness of the turbo multi-user receiving algorithm which is basing on the RLST by the theory comparison and the simulation.

关键词： Time division synchronous code division multiple access Spread spectrum communication Iterative algorithms Space technology Electronic mail Multiaccess communication Receiving antennas Iterative decoding Fading multimedia systems

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Dynamic segment based proxy caching for Video on Demand

Dynamic segment based proxy caching for Video on Demand

引用

IEEE International conference on multimedia and Expo (ICME)

作者： Xiaoling Li Wei Tu Eckehard Steinbach Institute of Communication Networks Media Technology Group Technische Universität München Munich Germany

In this paper, we propose a novel proxy caching scheme for video on demand (VoD) services. Our approach is based on an observation we have made during subjective VoD performance evaluation tests. We have found that when users are seeking for some specific content, they pay most attention to the initial delay, while a small shift of the starting point is acceptable. Meanwhile, the random access using the slide bar sometimes even makes this small shift unnoticeable. Based on this fact as well as the popularity of video segments, we propose a dynamic segment based caching algorithm. It adjusts the segment size according to its hitting rate and maximizes the user satisfaction by optimally trading off between the initial delay and the deviation of the starting point. Our experimental results show a significantly improved user satisfaction compared to previous caching approaches.

关键词： Streaming media Delay Heuristic algorithms Servers multimedia communication conferences Corporate acquisitions

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Ubiquitous Web access: Collaborative Optimization and Dynamic content Negotiation

Ubiquitous Web Access: Collaborative Optimization and Dynami...

引用

International conference on multimedia and Ubiquitous Engineering (MUE)

作者： Xavier Sanchez-Loro Victoria Beltran Jordi Casademont Marisa Catalan Wireless Networks Group-Telematics Department Technical University of Catalonia Barcelona Spain Universitat Politecnica de Catalunya Institut de Tecniques Energetiques Barcelona Catalunya ES

ISBN: (纸本)9780769531342

Traditionally, cellular wide area networks like UMTS are used as Internet access networks for particular users but, in some cases, they can be employed to provide Internet access to other smaller networks as well. The main inconvenient is that cellular networks have not the same bandwidth than wired networks and therefore, the cellular channel becomes a network bottle-neck. To help to mitigate this situation and in order to improve the user's experience different optimization techniques exist, especially in web traffic. This paper studies first the existing synergies at HTTP layer between device capabilities expression, content negotiation, channel optimization and content adaptation. And secondly, it presents a system where HTTP requests transmission is optimized, showing a significant improvement in response time by means of HTTP header reduction over the cellular channel. In order to obtain a successful browsing experience, headers should be restored when reaching the Internet. This dynamic header reconstruction allows giving enriched and more expressive information about user's device and browser capabilities. Thus navigation speed and user's QoE can be enhanced by means of dynamic content negotiation in order to obtain adapted (and lighter) content and responses from web servers and adaptation proxies alike.

关键词： Collaboration Cellular networks IP networks Wide area networks 3G mobile communication Land mobile radio cellular systems Bandwidth Telecommunication traffic Delay Internet

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Enabling access to sound archives through integration, enrichment and retrieval

Enabling access to sound archives through integration, enric...

引用

IEEE International conference on multimedia and Expo (ICME)

作者： Ivan Damnjanovic Josh Reiss Dan Barry Queen''s Mary University of London London UK Dublin Institute of Technologies Dublin Ireland

Many digital sound archives still suffer from tremendous problems concerning access. Materials are often in different formats, with related media in separate collections, and with non-standard, specialist, incomplete or even erroneous metadata. Thus, the end user is unable to discover the full value of the archived material. EASAIER addresses these issues with the development of an innovative remote access system which extends beyond standard content management and retrieval systems. The EASAIER system has been designed with sound archives, libraries, museums, broadcast archives, and music schools in mind. However, the tools may be used by anyone interested in accessing archived material; amateur or professional, regardless of the material involved. Furthermore, it enriches the access experience enabling the user to experiment with the materials in exciting new ways. The system features; enhanced cross media retrieval functionality, multi-media synchronisation, audio and video processing, analysis and visualisation tools, all combined within in a single user configurable interface.

关键词： Music Media Materials Streaming media Feature extraction Speech Ontologies

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Appscio: A Software Environment for Semantic multimedia Analysis

Appscio: A Software Environment for Semantic Multimedia Anal...

引用

International conference on Semantic Computing

作者： Gerald Friedland Eden Hensley Ramesh Jain Jerry Schumacher International Computer Science Institute Berkeley CA USA Appscio Inc. Freedom CA USA Bren School of Information and Computer Science University of California Irvine CA USA

ISBN: (纸本)9781424432035

The goal of the Appscio(tm) software platform is to ease the creation of multimedia content analysis applications that consist of components provided from multiple sources, in different programming languages, and for various operating systems. Appscio provides a unified approach that standardizes the entire process of development, deployment, and integration of components into productive applications. In addition, the aim is to facilitate the integration of analytic approaches with traditional sensor output. Therefore the framework allows the combination of multimedia analytics with any other event generating sources, as used for observational systems. A basic concept of the platform is to allow mainstream application developers to create semantic-rich Web applications that integrate components previously only accessible to scientists.

关键词： Streaming media Pipelines multimedia communication Servers Algorithm design and analysis Signal processing algorithms Machine vision

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Achieving Low Latency of multimedia content Browsing in UPnP AV Architectures

Achieving Low Latency of Multimedia Content Browsing in UPnP...

引用

International conference on Mobile Ubiquitous Computing, systems, Services and Technologies (UBICOMM)

作者： Hochul Shin Telecommunication Research Center Telecommunication & Network Business Samsung Electronics Company Limited Suwon Gyeonggi South Korea

UPnP AV solutions have suffered from latency performance problems in user interfaces to browse multimedia contents in remote hosts. This study shows how to improve the round-trip latency by way of caching and aggressive link-based prefetching of the response of the browse request. Caching reduces the latency dramatically, and aggressive link-based prefetching lead to 100% cache hit rate. Although it is commonly believed that aggressive link-based prefetching is a naive approach and causes numerous redundancies, we presented our prefetching strategy with the proper number of cache entries and proposed cache replacement algorithm is very effective and efficient. Through the evaluation of our research results, we present a dramatic performance improvement, approximately 300,000% faster than ever, without many redundancies.

关键词： Prefetching Media Servers Simple object access protocol Containers multimedia communication Computer architecture

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