Éric Guilbert graduated in mathematics in 1997. He received a PhD degree in computer science in 2004 from University of Rennes I (France). He is now associate professor at the Département des Sciences Géomatiques at Université Laval. His research interests include GIS, geometric modelling, multiple representations, and Digital Terrain Models, with application to the description and classification of terrain features and landforms. Éric Guilbert is a research member of the CRDIG.