Spatial Computing

David Caduff and Max J. Egenhofer, Geo-Mobile Query-by-Sketch, International Journal of Web Engineering and Technology, 3 (2): 157-175, 2007. The advent of wireless technology, such as cellphones, PDAs, tablet PCs, and sub-notebooks, allows tranferring portions of traditional desktop-based GIS technology to mobile environments. This paper introduces Geo-Mobile Query-by-Sketch, a sketch-based spatial querying system for mobile […]

Yohei Kurata and Max J. Egenhofer, The Head-Body-Tail Intersection for Spatial Relations Between Directed Line Segments, in: M. Raubal, H. Miller, A. Frank, and M. Goodchild (eds.) GIScience 2006—4th International Conference on Geographic Information Science, Lecture Notes in Computer Science, Vol. 4197, pp. 269-286. Abstract Directed line segments are fundamental geometric elements used to model through […]

M. Egenhofer and D. Wilmsen, Changes in Topological Relations with Splitting and Merging Regions, in: A. Riedl, W. Kainz, and G. Elmes (eds.), Progress in Spatial Data Handling — 12th International Symposium on Spatial Data Handling, Springer, pp. 339-352. Abstract This paper addresses changes in topological relations as they occur when splitting a region into two. […]

A. Rodríguez, I. Cruz, M. Egenhofer, and S. Levashkin (editors), GeoSpatial Semantics–First International Conference, GeoS 2005, Lecture Notes in Computer Science, Vol. 3799, Spinger, New York, 2005. This book contains the fully refereed papers of the First International Symposium on Geospatial Semantics, GeoS 2005, to be held in Mexico City, Mexico in November 2005.

L. Kulik, M. Duckham, and M. Egenhofer, Ontology-Driven Map Generalization Journal of Visual Languages and Computing 16 (3): 245-267, 2005. Abstract Different users of geospatial information have different requirements of that information. Matching information to users’ requirements demands an understanding of the ontological aspects of geospatial data. In this paper, we present an ontology-driven map […]

M. Egenhofer, Spherical Topological Relations, Journal on Data Semantics III: 25-49, 2005. Abstract Analysis of global geographic phenomena requires non-planar models. In the past, models for topological relations have focused either on a two-dimensional or a three-dimensional space. When applied to the surface of a sphere, however, neither of the two models suffices. For the […]

C. Bauzer Medeiros, M. Egenhofer, and E. Bertino (editors), Advances in Spatial and Temporal Databases–Nineth International Symposium, SSTD 2005, Lecture Notes in Computer Science, Vol. 3633, Spinger, New York, 2005. This book contains the fully refereed papers of the 9th International Symposium on Spatial and Temporal Databases, SSTD 2005, held in Angra dos Reis, Brazil […]

C. Bauzer Medeiros, M. Egenhofer, and E. Bertino (editors), Advances in Spatial and Temporal Databases–Nineth International Symposium, SSTD 2005, Lecture Notes in Computer Science, Vol. 3633, Spinger, New York, 2005. This book contains the fully refereed papers of the 9th International Symposium on Spatial and Temporal Databases, SSTD 2005, held in Angra dos Reis, Brazil […]