Hugo Ledoux

associate-prof in 3D geoinformation at TU Delft
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I am an associate-professor in the 3D geoinformation research group, which is part of the Department of Urbanism of the Faculty of the Built Environment & Architecture at the Delft University of Technology in the Netherlands.

I hold a PhD in computer science from the University of South Wales in the UK, and a BSc in Geomatics Engineering from the Université Laval in Québec City, Canada.

For my research, I am particularly interested in combining the fields of GIS and computational geometry. Put simply, I often try to solve geographical problems—either in 2D or in 3D—by first decomposing the world into triangles/tetrahedra or into another tessellation such as the Voronoi diagram. My work involves developing topological data structures to store these tessellations, and designing algorithms to analyse and extract information from the datasets. I strongly believe in implementing my research ideas, the source code of my projects is freely available under open-source licences (on GitHub).

I am currently working, among others, on storing efficiently 3D city models with CityJSON, on the storage and the analysis of massive TINs, the validation and the automatic repair of polygons and polyhedra as found in GIS, the higher-dimensional modelling of geographical information (ie 4D+), and the integration of IFC and 3D GIS.

Teaching-wise, I am the responsible lecturer for the course Digital terrain modelling (course is open) in the MSc Geomatics programme at TU Delft. For some years already, I’ve been using only free and open-source software for the labs, eg QGIS, rasterio, Shapely, etc.