Sisi Zlatanova is a full professor at the Faculty of Built Environment, UNSW, Sydney, Australia, and leads the GRID Lab. They received their Ph.D. degree from Graz University of Technology, Austria. They have worked as a software developer and have held academic positions at the University of Architecture and Civil Engineering, Sofia, Bulgaria; Delft University of Technology, The Netherlands; and Siberian State University of Geo-information Technology, Novosibirsk, Russia. Their recent research interests are in 3D modelling and navigation using different representations. They are the current president of ISPRS Technical Commission IV ’Spatial Information Science’ and a co-chair of the OGC SWG IndoorGML.