Search (15 results, page 1 of 1)

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Abstract

This article discusses the implementation of MPEG-7 within the Moving Image Collections (MIC) portal. MIC is a union catalog of the world's moving images, as well as a portal to information on the care, management, and use of moving images. The MIC Union Catalog utilizes a core registry schema that is designed to map readily to any metadata schema used to describe moving images. The MIC development team was particularly interested in supporting MPEG-7 for future nontextual digital video indexing applications. An MPEG-7 application profile and Microsoft Access cataloging utility were developed in order to test MPEG-7 within the MIC Union Catalog; 400 science digital videos in the ResearchChannel collection were cataloged in MPEG-7. The MPEG-7 records were mapped to MIC and ingested. Draft MPEG-7 to MIC and MIC to MPEG-7 maps were developed and are available at the MIC Web site. MPEG-7 records are available for viewing for any record in the MIC database via a collections explore search within the Archivists' portal. The MPEG-7 cataloging utility may be downloaded from the MIC project Web site (Moving Image Collections. MIC Cataloging Utility. http://gondolin.rutgers.edu/MIC/text/ how/cataloging_utility.htm). This article also discusses issues with MPEG-7 as a descriptive metadata schema, as well as mapping and implementation issues identified in the project.

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Abstract

Allowing the description of the structure of documents has been one of the key factors for the success of the hypertext markup language (HTML) family of markup languages. This capability has motivated the phenomenon that has become known as the World Wide Web (the "Web"). The next generation of the Web, known as the Semantic Web (Berners-Lee, Hendler. & Lassila, 2001), aims at describing the meaning rather than the structure of data, adding more intelligent search, retrieval, and other agent functionalities to the Web, and tools that make the implementation of this Semantic Web possible are greatly needed. The increasing availability of multimedia on the World Wide Web makes metadata description efforts for multimedia a pressing need, yet with the volume of content being created, often only a rudimentary description of the multimedia content is available. In addition, the digital mode entails a host of other descriptive needs, such as the format, factors such as compression and transmission, and issues such as copyright restrictions and terns for usage. Thus, new and efficient ways of describing multimedia content and meaning are needed as well as a structure that is capable of carrying such descriptions. Several attempts have been made to grapple with this issue using descriptive metadata, one of the earliest of which was the revision of the Dublin Core to ascertain essential features necessary to resource discovery of visual items in a networked environment (Weibel & Miller, 1997). Other metadata schemes, such as the Visual Resources Association Core Categories (http://www.vraweb.org/vracore3.htm), also include format information necessary to the use and display of digital images.

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Abstract

Improvements in network bandwidth along with dramatic drops in digital storage and processing costs have resulted in the explosive growth of multimedia (combinations of text, image, audio, and video) resources on the Internet and in digital repositories. A suite of computer technologies delivering speech, image, and natural language understanding can automatically derive descriptive metadata for such resources. Difficulties for end users ensue, however, with the tremendous volume and varying quality of automated metadata for multimedia information systems. This lecture surveys automatic metadata creation methods for dealing with multimedia information resources, using broadcast news, documentaries, and oral histories as examples. Strategies for improving the utility of such metadata are discussed, including computationally intensive approaches, leveraging multimodal redundancy, folding in context, and leaving precision-recall tradeoffs under user control. Interfaces building from automatically generated metadata are presented, illustrating the use of video surrogates in multimedia information systems. Traditional information retrieval evaluation is discussed through the annual National Institute of Standards and Technology TRECVID forum, with experiments on exploratory search extending the discussion beyond fact-finding to broader, longer term search activities of learning, analysis, synthesis, and discovery.

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Abstract

A database management system is a general-purpose software system that facilitates the processes of defining, constructing, and manipulating databases for various applications. This article investigates the role of data management in multimedia digital libraries, and its implications for the design of database management systems. The notions of content abstraction and content independence are introduced, which clearly expose the unique challenges (for database architecture) of applications involving multimedia search. A blueprint of a new class of database technology is proposed, which supports the basic functionality for the management of both content and structure of multimedia objects

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Abstract

Das vorliegende Buch handelt von den Technologien zum Austausch medialer Inhalte. Die Inhalte werden seit geraumer Zeit vornehmlich in digitaler Form dargestellt, was mit vielen Vorteilen für die Produzenten und Konsumenten verbunden ist. Positive Aspekte erstrecken sich sowohl auf die mögliche Qualität als auch auf die Handhabung und den erleichterten Umgang. Seit Beginn des 21. Jahrhunderts gibt es nun einen neuen Entwicklungsschritt, der als zweite Phase der Digitalisierung bezeichnet werden kann. Diese ist dadurch gekennzeichnet, dass die medialen Inhalte, oft auch als Content bezeichnet, in sehr vielen Fällen in datenreduzierter Form digital gespeichert und verteilt werden. Auch die Akquisition bezieht vermehrt Datenreduktion mit ein. Der Datenreduktion und den Datenformaten (File-Formate), unter denen die Inhalte ausgetauscht werden, kommen in dieser Phase eine zentrale Bedeutung zu. Damit die einzelnen Kommunikationspartner einander auch in dieser neuen Ära verstehen können, d. h. die Kommunikation ohne großen Aufwand, respektive ohne merklichen Qualitätsverlust stattfinden kann, ist eine Standardisierung sowohl der Datenreduktionsalgorithmen als auch der File-Formate erforderlich, und genau dies ist Gegenstand dieses Buches.

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Abstract

Personal video recorders have the capability to change the media delivery industry fundamentally, and in this context, many believe the real international age of personal digital recorders (PDRs) will arrive with the use of "open" systems. The world reached an important milestone with the publication of the TV-Anytime Phase 1 specifications for unidirectional broadcast and metadata services over bidirectional networks. TV-Anytime is a worldwide pre-standardization body; this article gives an overview of the main features of TV-Anytime's metadata specification and its relationship to MPEG-7 and provides insight into ways two organizations concerned with standards work together. Phase 2 has since been completed and TV-Anytime has been adopted by various international standards organizations dealing with telecommunications and is now in the implementation phase.

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Abstract

EC project PRESTO has completed a survey of the holdings and preservation status of ten major broadcast archives. These archives represent a significant portion of total European broadcast archives, including some ofthe largest individual collections.The main findings are that approximately 75% of this material is at risk or inaccessible and that the collections are growing at roughly four times the rate of current progress in preservation work. This article gives detailed results of the survey, and describes the technical developments being produced by project PRESTO to reduce the costs and improve the effectiveness of multimedia archive preservation projects.

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Abstract

Purpose - The aim of this paper is to ask why the libraries and the computer and media centres of German universities are picking up too little to improve the conditions for learning, teaching and research. Design/methodology/approach - With the founding of the Information, Communication and Media Center/Informations-, Kommunikations- und Medienzentrums (ICMC/IKMZ), the central services of the Brandenburg Technical University of Cottbus (BTU Cottbus) library, computer center, multimedia center and administrative data processing were combined on a common management level, and the prerequisites for the development of integrated information management were created. Findings - On this basis the following goal was set: the realization of more efficient organizational structures for a broad spectrum of customer- and service-oriented information, communications and media (ICM) offers for research, teaching and administration. Originality/value - The paper gives an overview of German discussion on the convergence of services, and presents the ICMC/IKMZ of Cottbus University as an example of a converged institution.

Source

Library hi tech. 24(2006) no.3, S.430-439

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Date

14. 2.2001 19:09:22

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Abstract

Internetseiten aufrufen und E-Mails vom Sofa aus versenden: Das Fernsehgerät wird in Zukunft mehr können als bisher - Unter den Produktnamen iesy TV, iesy Net und iesy Phone will der Netzbetreiber eKabel in Hessen Kunden für neue Multimediaangebote gewinnen. 2000 Haushalte im Frankfurter Westend werden in einer ersten Stufe mit einem Teil der Dienste versorgt werden. In den nächsten Monaten sollen sukzessive weitere Wohnungen an ein modernisiertes Breitbandnetz angeschlossen werden. Doch für die Digital-TV-Fans entsteht mit dem neuen Angebot eine schwierige Lage

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Abstract

Relevance has been a difficult concept to define, let alone measure. In this paper, a simple operational definition of relevance is proposed for a Web-based library catalog: whether or not during a search session the user saves, prints, mails, or downloads a citation. If one of those actions is performed, the session is considered relevant to the user. An analysis is presented illustrating the advantages and disadvantages of this definition. With this definition and good transaction logging, it is possible to ascertain the relevance of a session. This was done for 905,970 sessions conducted with the University of California's Melvyl online catalog. Next, a methodology was developed to try to predict the relevance of a session. A number of variables were defined that characterize a session, none of which used any demographic information about the user. The values of the variables were computed for the sessions. Principal components analysis was used to extract a new set of variables out of the original set. A stratified random sampling technique was used to form ten strata such that each new strata of 90,570 sessions contained the same proportion of relevant to nonrelevant sessions. Logistic regression was used to ascertain the regression coefficients for nine of the ten strata. Then, the coefficients were used to predict the relevance of the sessions in the missing strata. Overall, 17.85% of the sessions were determined to be relevant. The predicted number of relevant sessions for all ten strata was 11 %, a 6.85% difference. The authors believe that the methodology can be further refined and the prediction improved. This methodology could also have significant application in improving user searching and also in predicting electronic commerce buying decisions without the use of personal demographic data

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Classification

006.7 22

Date

7. 3.2007 19:30:22

DDC

006.7 22

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Date

12. 8.2012 18:05:22