A spatio-semantic query language for the integrated analysis of city models and building information models

Abstract

Distinct semantic-geometric data models are applied in architecture/engineering/construction and geospatial domains. However, to make decisions within complex urban planning and engineering tasks these two domains and their data models must be combinded. Currently, the necessary joint information is created by converting data between the two domains. Because the employed modelling differs conceptually, there is a high risk of information loss durring these conversions. To overcome this issue, we present a spatio-semantic query language that allows analysis of IFC building information models and geospatial CityGML models in an integrated context. Rather than converting between IFC and CityGML, a holistic information space is realized by an intermediate layer that abstracts from the two schemas of spatio-semantic modelling.