ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Articles | Volume VIII-4/W2-2021
ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., VIII-4/W2-2021, 145–151, 2021
https://doi.org/10.5194/isprs-annals-VIII-4-W2-2021-145-2021
ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., VIII-4/W2-2021, 145–151, 2021
https://doi.org/10.5194/isprs-annals-VIII-4-W2-2021-145-2021

  07 Oct 2021

07 Oct 2021

IFCTERRAIN – A FREE AND OPEN SOURCE TOOL TO CONVERT DIGITAL TERRAIN MODELS (DTM) TO OPENBIM INDUSTRY FOUNDATION CLASSES (IFC)

C. Clemen, M. Schröder, T. Kaiser, and E. Romanschek C. Clemen et al.
  • Faculty of Spatial Information, HTW Dresden - University of Applied Sciences, Dresden, Germany

Keywords: digital terrain model, DTM, BIM, IFC, open source

Abstract. Digital Terrain Models (DTM) play an important role for digital twins of the built environment. However, if the Building Information Modeling method (BIM) is used, many engineers find it difficult to provide BIM-compliant terrain models. We present a small tool with which classic DTM, which have been created by landsurveyors or geospatial engineers, can be converted into the format Industry Foundation Classes (IFC) in order to be used in openBIM projects. This paper first clarifies the use cases and then goes into detail on possible configurations of the transformation process. With the presented software tool IfcTerrain the user may select different export options concerning IFC object type of the terrain, geometric representation, georeferencing or the annotation with metadata. IfcTerrain is free and open source and was developed in the context of an educational institution.