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Automated geodata analysis and metadata generation

: Balfanz, D.


Erbacher, R.F. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Visualization and Data Analysis 2002. Proceedings : 21 - 22 January 2002, San Jose, USA
Bellingham/Wash.: SPIE, 2002 (SPIE Proceedings Series 4665)
ISBN: 0-8194-4405-7
Conference "Visualization and Data Analysis" <2002, San Jose/Calif.>
Fraunhofer IGD ()
metadata; geodata; semantic LoD; metadata visualization; metadata generation

With the shift from production to information society, a parallel development has taken place in processing geo information. Today, the focus is often more on intelligent and complex use and analysis of existing data than on data acquisition. The tasks of users now are to find appropriate data, as well as appropriate analysis or mining methods, for their specific exploration goals.
This paper first presents an integrated approach that uses metadata technology to guide users through data and method selection. Important prerequisites in the decision process are the user's correct understanding of geodata qualities and, to this end, the availability of metadata. Therefore, the core of the presented approach is then described in detail, i.e. metadata visualization and generation. The visualization part aims to make the user aware of the goal-related geodata qualities. It consists of an automated semantic level-of-detail method, using abstraction hierarchies and linked visualization functions. The underlying metadata is provided via a repository-based generator, which creates descriptive metadata by analysis and interpretation of the original geodata. Finally, an outlook over the next steps in automated support for geodata mining is given.