A general theory of spatial relations to support a graphical tool for visual information extraction
In this paper we present a general spatial composition framework which allows one to model the graphical objects and the spatial relations of a large class of visual languages. The new formalism has been implemented within the SRQ tool, a software system for the Visual Information Extraction, enabling it to work on a wider range of domains. In particular, in the paper we describe the application of SRQ to geospatial data. (c) 2012 Elsevier Ltd. All rights reserved.
spatial relations information extraction visual information search geospatial data analysis