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Conference on multimedia content access - algorithms and systems II

作者： Scherp, Ansgar Agaram, Srikanih Jain, Ramesh OFFIS Inst Informat Technol D-26121 Oldenburg Germany Univ Calif Irvine Irvine CA 92697 USA

ISBN: (纸本)9780819469922

The management,of the vast amount of media assets captured at every day events such as meetings, birthday parties, vacation, and conferences has become an increasingly challenging problem. Today, most media management applications are media-centric. This means, they put the captured media assets into the center of the management. However, in recent years it has been proposed that events are a much better abstraction of human experience and thus provide a more appropriate means for managing media assets. Consequently, approaches that include events into their media management solution have been explored. However, they typically consider events only as some more metadata that can be extracted from the media assets. In addition, today's applications and approaches concentrate on particular problems such as event detection, tagging, sharing, classification, or clustering and are often focused on a single media type. In this paper, we argue for the benefits of an event-centric media management (EMMa) approach that-looks at the problem of media management holistically. Based on a generic event model, we specify a media event model for-the EMMa approach. The single -phases and processes of the EMMa approach are defined in a general process chain for-an event-centric media management, the EMMa cycle. This cycle follows the event concept throughout all phases and processes of the chain and-puts the concept of events in the center of the media management. Based on the media event model and EMMa cycle, we design a component-based architecture for the EMMa approach and conduct an implementation of the approach.

关键词： events event-centric media management event classification event clustering multimedia authoring

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Automatic violent content web filtering approach based on the KDD process

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INTERNATIONAL JOURNAL OF WEB INFORMATION systems 2008年第4期4卷 441-+页

作者： Hammami, Mohamed Guermazi, Radhouane Ben Hamadou, Abdelmajid Multimedia Informat Syst & Adv Comp Lab Sfax Tunisia

Purpose - The growth of the web and the increasing number of documents electronically available has been paralleled by the emergence of harmful web pages content such as pornography, violence, racism, etc. This emergence involved the necessity of providing filtering systems designed to secure the internet access. Most of them process mainly the adult content and focus on blocking pornography, marginalizing violence. The purpose of this paper is to propose a violent web content detection and filtering system, which uses textual and structural content-based analysis. Design/methodology/approach - The violent web content detection and filtering system uses textual and structural content-based analysis based on a violent keyword dictionary. The paper focuses on the keyword dictionary preparation, and presents a comparative study of different data mining techniques to block violent content web pages. Findings - The solution presented in this paper showed its effectiveness by scoring a 89 per cent classification accuracy rate on its test data set. Research limitations/implications - Many future work directions can be considered. This paper analyzed only the web page, and an additional analysis of the visual content can be one of the directions of future work. Future research is underway to develop effective filtering tools for other types of harmful web pages, such as racist, etc. Originality/value - The paper's major contributions are first, the study and comparison of several decision tree building algorithms to build a violent web classifier based on a textual and structural content-based analysis for improving web filtering. Second, showing laborious dictionary building by finding automatically discriminative indicative keywords.

关键词： Worldwide web Classification schemes Data analysis content management

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Embedded Multi-Channel Video Encoder Based on DSP

Embedded Multi-Channel Video Encoder Based on DSP

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5th IEEE International Symposium on Embedded Computing

作者： Yao Chunlian Li Wei Meng Qinglei Gao Lihua Beijing Technol & Business Univ Sch Digital Content Beijing 100037 Peoples R China Beihang Univ Sch Comp Sci & Engn Digital Media Lab Beijing 100083 Peoples R China

ISBN: (纸本)9780769533483

To satisfy the requirement of embedded video encoder in various scenarios, an embedded multi-channel video coding system based on multimedia processor-DM642 DSP is designed in this paper. For real-time application requirement, we optimize the encoder at three levels: Firstly, at algorithm level, develop some fast algorithm fitting for LISP;secondly, at system level, adjust the architecture of encoder and optimization data transfer with EDMA;thirdly, at code level, use linear assembly for key code. Experimental results show that the embedded video encoder can compress four channel CIF video data real-time.

关键词： Digital signal processing Video compression Digital signal processing chips Real time systems Signal processing algorithms Hardware Random access memory Video coding Application software Switches

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Achieving Interoperability in Conditional access systems through the Dynamic Download and Execution of Cryptographic Software for the IPTV System

Achieving Interoperability in Conditional Access Systems thr...

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International Conference on Convergence Information Technology

作者： Jinyoung Moon Jungtae Kim Jongyoul Park Euihyun Paik U-Computing Research Group Electronics and Telecommunications Research Institute South Korea

An IPTV system that transmits multimedia contents through the IP network needs to adopt a conditional access system allowing the only entitled subscribers to view the premium content as other pay-TV systems do. Although several standard specifications have been published for interoperable models of conditional access systems, the proposed models are based on the unidirectional or restricted bidirectional broadcasting network and do not utilize the characteristics of the IP network. However, software download scheme through the bidirectional IP network enables it to change existing conditional access systems in a secure way. This paper introduces an interoperable conditional access system that can update any cryptographic software provided by different conditional access system vendors through downloading and executing dynamically the downloaded conditional access software only if the software follows the pre-defined interfaces.

关键词： Cryptography IPTV IP networks Software algorithms Satellite broadcasting multimedia systems Security multimedia communication Information technology Moon

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Fuzzy mining of multimedia genre applied to television archives

Fuzzy mining of multimedia genre applied to television archi...

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IEEE International Conference on multimedia and Expo (ICME)

作者： Alberto Messina Maurizio Montagnuolo RAI Radiotelevisione Italiana Centre for Research and Technological Innovation Torino Italy Department of Computer Science University of Turin Torino Italy

The quantity of multimedia content available either through the traditional distribution channels, such as broadcast television, or through new platforms like the Internet, is continuously increasing. Tools for user-oriented access to desired information are thus needed. In this paper, we illustrate a novel fuzzy multimedia mining technique for genre characterisation, aimed at overcoming limitations of conventional crisp classification systems. Effective results in genre classification and characterisation are presented based on the extraction of structural and cognitive properties of the content.

关键词： multimedia communication Feature extraction Data mining Classification algorithms Face Streaming media TV

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On-Line Video Summarization Based on Signature-Based Junk and Redundancy Filtering

On-Line Video Summarization Based on Signature-Based Junk an...

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International Workshop on Image Analysis for multimedia Interactive Services, WIAMIS

作者： Víctor Valdés José M. Martínez Grupo de Tratamiento de Imágenes Escuela Politécnica Superior Universidad Autónoma de Madrid Spain

The huge amount of video content and the increasing rate in which new content is being created makes video summarization a necessary tool for the efficient access and management of video repositories. Nevertheless, the huge amount of data and the complexity of current techniques make the implantation of the summarization systems a difficult or non practical task. This paper presents current advances in the development of a novel algorithm for on-line video summarization, which can be easily used also as a video retrieval tool, aimed to combine summarization quality with high computational efficiency providing a system that can be practical for both commercial and home environments.

关键词： Iterative algorithms Visualization Bandwidth Image analysis multimedia systems Filtering content management Computational efficiency Algorithm design and analysis Decoding

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ANTS: A Complete System for Automatic News Programme Annotation Based on Multimodal Analysis

ANTS: A Complete System for Automatic News Programme Annotat...

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International Workshop on Image Analysis for multimedia Interactive Services, WIAMIS

作者： A. Messina R. Borgotallo G. Dimino D. Airola Gnota L. Boch RAI-Centre for Research and Technology Innovation Turin Italy

This paper describes an integrated system for the acquisition, automatic annotation and Web publication of television broadcast news programmes named ANTS (automatic newscast transcription system). The system consists of several analysis components integrated in a unified architecture. Users have the possibility to access a large daily-growing database of news stories from the main national channels, all identified, categorised and published in a fully automatic way. The system identifies story boundaries, extracts texts from spoken content, classifies stories by subject and links external relevant information coming from the Web. Performances of the system have been evaluated in a real-life scenario, by providing an instance of the system to a panel of professional users inside RAI. The strength of the approach behind ANTS consists in the ability to integrate several heterogeneous analysis components in a performant and ready-for-production environment, capable of elaborating many hours of material per day without significant service drops and with sufficiently good accuracy for industrial employment in large broadcasting facilities.

关键词： Histograms Image analysis multimedia communication Face detection Gunshot detection systems Speech Clustering algorithms Digital multimedia broadcasting multimedia systems Technological innovation

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A framework for utility-based multimedia adaptation

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IEEE TRANSACTIONS ON CIRCUITS AND systems FOR VIDEO TECHNOLOGY 2007年第6期17卷 719-728页

作者： Prangl, Martin Szkaliczki, Tibor Hellwagner, Hermann Klagenfurt Univ A-9020 Klagenfurt Austria Hungarian Acad Sci Comp & Automat Res Inst H-111 Budapest Hungary

content adaptation is an important issue of multimedia frameworks in order to achieve universal multimedia access (UMA), i.e., to enable consumption of multimedia content independently of the given resource limitations, terminal capabilities, and user preferences. The digital item adaptation (DIA) standard, one of the core specifications of the MPEG-21 framework, supports content adaptation considering a wide range of networks, devices, and user preferences. Most adaptive multimedia frameworks targeting the UMA vision do not consider utility aspects in their adaptation decisions. This paper focuses on a generic semantic-based audio-visual utility model for DIA that aims to enhance the multimedia experience for the user. Our proposed model is able to take the semantics and the perceptual features of the content as well as the users' specific utility aspects into account. Based on a detailed analysis of these constraints, we will show how the model reacts on individual input data. For choosing the best adaptation decision considering resource limitations on client and server sides as well as network characteristics, we evaluate four algorithms for performing this adaptation decision taking task. We will discuss results according to some use case scenarios.

关键词： adaptation decision taking optimization problem recommender system semantic quality (SQ) universal multimedia access (UMA) universal multimedia experience (UME) utility model

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ARGOS:: French Evaluation Campaign for benchmarking of video content analysis methods

ARGOS:: French Evaluation Campaign for benchmarking of video...

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Conference on multimedia content access - algorithms and systems

作者： Benois-Pineau, Jenny Joly, Philippe Kijak, Ewa Quenot, Georges LABRI Bordeaux France IRIT Toulouse France IRISA Rennes France CLIPS IMAG CNRS F-38041 Grenoble 9 France

ISBN: (纸本)9780819466198

The paper presents the Argos evaluation campaign of video content analysis tools supported by the French Techno-Vision program. This project aims at developing the resources of a benchmark of content analysis methods and algorithms. The paper describes the type of the evaluated tasks, the way the content set has been produced, metrics and tools developed for the evaluations and results obtained at the end of the first phase.

关键词： video content analysis evaluation benchmark

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Storage format for personalized broadcasting content consumption

Storage format for personalized broadcasting content consump...

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Conference on multimedia content access - algorithms and systems

作者： Jin, Sung Ho Jang, Jea-Seok Min, Hyun-Seok Ro, Yong Man Kim, Hui Yong Informat & Commun Univ Image & Video Syst Lab 119 Munjiro Taejon 305732 South Korea Elect & Telecommun Res Inst Broadcasting Media Res Grp Daejeon South Korea

ISBN: (纸本)9780819466198

In this paper, we propose a storage format which binds digital broadcasts with related data such as TV-Anytime metadata, additional multimedia resources, and personal viewing history. The goal of the proposed format is to make it possible to offer personalized content consumption after recording broadcasting contents to storage devices, e.g., HD-DVD and Blu-ray Disc. TO achieve that, we adopt MPEG-4 file format as a container and apply a binary format for scenes (BIFS) for representing and rendering personal viewing history. In addition, TV-Anytime metadata is used to describe broadcasts and to refer to the additional multimedia resources, e.g, images, audio clips, and short video clips. To demonstrate the usefulness of the proposed format, we introduce an application scenario and test it on that scenario.

关键词： storage format broadcasting content TV-anytime metadata MPEG-4 file format BIFS

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