ABSTRACT
In this paper we present the architecture of a Digital Library for enabling the reusing of audiovisual documents in an e-Learning context. The reuse of Learning Objects is based on automatically extracted descriptors carrying a semantic meaning for the professional that uses these Learning Objects to prepare new interactive multimedia lectures. The presented system is based on MILOS, a general purpose Multimedia Content Management System created to support design and effective implementation of digital library applications. MILOS supports the storage andcontent based retrieval of any multimedia documents whose descriptions are provided by using arbitrary metadata models represented in XML. The objective is to demonstrate the reuse of digital content, as video documents or Power Point presentations, by exploiting existing technologies for automatic extraction of metadata (OCR, speech recognition, cut detection, MPEG-7 visual descriptors, etc.). The search interface assists the user of the system in the retrieval the multimedia objects in the collection, by combining full-text retrieval on text extracted and metadata, and similarity search on the MPEG-7 visual descriptors.
- Nettuno. http://www.uninettuno.it.Google Scholar
- Mpeg requirements group, mpeg-7 overview, 2003. Doc. ISO/IEC JTC1/SC29/WG11N5525.Google Scholar
- G. Amato, F. Debole, F. Rabitti, and P. Zezula. YAPI: Yet another path index for XML searching. In ECDL 2003, 7th European Conference on Research and Advanced Technology for Digital Libraries, Trondheim, Norway, August 17-22, 2003, 2003.Google ScholarCross Ref
- G. Amato, C. Gennaro, P. Savino, and F. Rabitti. Milos: a multimedia content management system for digital library applications. In Proceedings of the 8th European Conference on Research and Advanced Technology for Digital Libraries (ECDL 2004), volume 3232 of Lecture Notes in Computer Science, pages 14-25. Springer, September 2004.Google ScholarCross Ref
- C. Böhm, S. Berchtold, and D. Keim. Searching in high-dimensional spaces: Index structures for improving the performance of multimedia databases. ACM Computing Surveys, 33(3):322--373, September 2001. Google ScholarDigital Library
- D. C. A. Bulterman. Is it time for a moratorium on metadata? IEEE MultiMedia, 11(4):10--17, October 2004. Google ScholarDigital Library
- I. L. T. S. Committee. Ieee 1484.12.1-2002, draft standard for learning object metadata. http://ltsc.ieee.org/wg12/index.html, 2002.Google Scholar
- W. W. W. Consortium. XML path language (XPath), version 1.0, W3C. Recommendation, November 1999.Google Scholar
- N. Cristianini and J. Shawe--Taylor. An Introduction to Support Vector Machines. Cambidge University Press, 2000. Google ScholarDigital Library
- A. Hauptmann and H. Wactlar. Indexing and search of multimodal information. In Proceedings of the 1997 International Conference on Acoustics, Speech and Signal Processing (ICASSP-97), April 1997. Google ScholarDigital Library
- ISO/IEC. Information technology-Multimedia content description interfaces. Part 3: Visual. 15938-3:2002.Google Scholar
- ISO/IEC. Information technology-Multimedia content description interfaces. Part 6: Reference Software. 15938-6:2003.Google Scholar
- G. Salton and M. J. McGill. Introduction to Modern Information Retrieval. McGraw-Hill Book Company, 1983. Google ScholarDigital Library
- P. Zezula, G. Amato, F. Debole, and F. Rabitti. Tree signatures for xml querying and navigation. In Database and XML Technologies, First International XML Database Symposium, XSym 2003, volume 2824 of Lecture Notes in Computer Science, pages 149--163. Springer, 2003.Google Scholar
Index Terms
- Automatic metadata extraction and indexing for reusing e-learning multimedia objects
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