Automated metadata in multimedia information systems: - download pdf or read online

By Michael Christel

ISBN-10: 1598297716

ISBN-13: 9781598297713

ISBN-10: 1598297724

ISBN-13: 9781598297720

Advancements in community bandwidth besides dramatic drops in electronic garage and processing expenses have ended in the explosive development of multimedia (combinations of textual content, snapshot, audio, and video) assets on the web and in electronic repositories. a set of machine applied sciences offering speech, photo, and average language figuring out can instantly derive descriptive metadata for such assets. problems for finish clients happen, notwithstanding, with the super quantity and ranging caliber of automatic metadata for multimedia info platforms. This lecture surveys automated metadata construction tools for facing multimedia details assets, utilizing broadcast information, documentaries, and oral histories as examples. thoughts for making improvements to the application of such metadata are mentioned, together with computationally extensive techniques, leveraging multimodal redundancy, folding in context, and leaving precision-recall tradeoffs lower than person keep watch over. Interfaces construction from instantly generated metadata are awarded, illustrating using video surrogates in multimedia details structures. conventional info retrieval review is mentioned throughout the annual nationwide Institute of criteria and know-how TRECVID discussion board, with experiments on exploratory seek extending the dialogue past fact-finding to broader, long term seek actions of studying, research, synthesis, and discovery.

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Extra info for Automated metadata in multimedia information systems: creation, refinement, use in surrogates, and evaluation

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Even the small time window shows a spike of activity on November 24, which corresponds to the eruption of the Galeras volcano in Colombia. A fully dynamic, interactive multimedia surrogate within the Informedia interface is the Visual Information Browsing Environment (VIBE) view developed at the University of Pittsburgh [95]. VIBE represents query terms as nodes. Documents are represented by plotted rectangles suspended within the surface bounded by the query terms. 3: Segment Grid, Timeline, and Nested Lists surrogates showing different emphases in collection-level view of 354 news story segments from TRECVID 2006 test set.

A documentary corpus? A general video corpus? • • • • 33 chapter 4 Multimedia Surrogates To illustrate earlier sections, multimedia surrogates of thumbnails and storyboards have been shown in figures. In information retrieval, the term “document surrogate” is used to label information that serves as the representation for the full document, such as a title, abstract, table of contents, set of keywords, or combinations of these descriptors. For a multimedia document with audio and/or video and a temporal dimension, a multimedia surrogate labels the set of text, image, audio, and/or video that can serve as a condensed representation for the full multimedia document.

Selecting subsets of video documents based on their metadata. Today’s commercial video search engines often rely on filename and accompanying text sources [60]. Users issue text queries to retrieve nonlinguistic visual imagery. The image retrieval community has focused on content-based indexed by pixel-level image attributes such as color, texture, and shape [6, 60], where users supply a visual example as the search key, but the underlying low-level attributes makes it difficult for the user to formulate queries.

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Automated metadata in multimedia information systems: creation, refinement, use in surrogates, and evaluation by Michael Christel

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