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作者 Christel, Michael G
書名 Automated metadata in multimedia information systems [electronic resource] : creation, refinement, use in surrogates, and evaluation / Michael G. Christel
出版項 San Rafael, Calif. (1537 Fourth Street, San Rafael, CA 94901 USA) : Morgan & Claypool Publishers, c2009
國際標準書號 9781598297720 (electronic bk.)
9781598297713 (pbk.)
國際標準號碼 10.2200/S00167ED1V01Y200812ICR002 doi
book jacket
說明 1 electronic text (vii, 73 p. : ill.) : digital file
系列 Synthesis lectures on information concepts, retrieval, and services ; # 2
Synthesis lectures on information concepts, retrieval, and services (Online) ; # 2
附註 Part of: Synthesis digital library of engineering and computer science
Title from PDF t.p. (viewed on January 8, 2009)
Series from website
Includes bibliographical references (p. 63-71)
Evolution of multimedia information systems, 1990-2008 -- Introduction to the Informedia project -- Reflections/exercises -- Survey of automatic metadata creation methods -- Aural processing -- Visual processing -- Language processing -- Reflections/exercises -- Refinement of automatic metadata -- Computationally intensive approaches -- Temporal and multimodal redundancy -- Leveraging context -- User-controlled precision-recall trade-off -- Reflections/exercises -- Multimedia surrogates -- Video surrogate examples -- Surrogates for collections of video -- Reflections/exercises -- End-user utility for metadata and surrogates effectiveness, efficiency, and satisfaction -- Informedia experiments on various video surrogates -- NIST TRECVID on fact-finding shot-based retrieval -- Exploratory use of multimedia information systems -- Reflections/exercises -- Conclusions
Abstract freely available; full-text restricted to subscribers or individual document purchasers
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Mode of access: World Wide Web
System requirements: Adobe Acrobat reader
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
Also available in print
主題 Metadata harvesting
Multimedia systems -- Abstracting and indexing
Multimedia
Digital video library
Automated metadata generation
Speech recognition
Image processing
Named entity extraction
Video surrogate
Information retrieval
Evaluation
TRECVID
Vari Title Synthesis digital library of engineering and computer science
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