This paper considers a novel indoor positioning method that is currently under development at the ETH Zurich. The method relies on a digital spatio-semantic interior building model CityGML and a Range Imaging sensor. In contrast to common indoor positioning approaches, the procedure presented here does not require local physical reference infrastructure, such as WLAN hot spots or reference mark...

Conversion of Industry Foundation Classes (IFC) building models into CityGML city is one the operational scenarios for BIM–GIS integration, with a variety applications producing and consuming data on either side. Given in-depth cross-domain knowledge required to specify such conversions, heterogeneity IFC input use cases resulting CityGML, flexible configurable solutions are needed that make co...

Several tasks in urban and architectural design are today undertaken in a geospatial context. Building Information Models (BIM) and geospatial technologies offer 3D data models that provide information about buildings and the surrounding environment. The Industry Foundation Classes (IFC) and CityGML are today the two most prominent semantic models for representation of BIM and geospatial models...

This article deals with the estimation of the energy demand for residential buildings in the city of Vienna. As first step, the energy demand for space heating is computed on the basis of the guidelines issued by the Austrian Institute of Construction Engineering and starting from a CityGML-based semantic 3D city model which acts as information hub containing integrated and harmonised spatial a...