Publications of P. Grifoni

This page shows all publications that appeared in the IASI annual research reports. Authors currently affiliated with the Institute are always listed with the full name.

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IASI Research Report n. 628  (Previous    Next)


Ferri F., Grifoni P., Maurizio Rafanelli

The Sketch Recognition and Query Interpretation by GSQL, a Geographical Sketch Query Language

ABSTRACT
Geographic information is intrinsically spatial and it can be conveniently represented using a bi-dimensional space. Graphical User Interfaces and Visual Languages can be used to satisfy this need. However the growing availability of sketching enables the users to have a more informal and natural approach in the interaction. For this reason this paper presents GSQL (Geographical Sketch Query Language), a sketch-based approach for querying geographical database. Each one of the users can easily sketch his/her geographical query by drawing it, erasing and modifying its parts and highlighting the query target. Context independent sketch interpretation uses spatial and temporal information related to the process of sketching, while context-dependent sketch interpretation uses geographical domain information to solve remaining ambiguities and provide the correct drawing and query interpretation. Also an analysis the ambiguities, which characterise sketching of objects in the geographic application domain, and their possible solutions are here presented.
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