ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., IV-2, 33-39, 2018
https://doi.org/10.5194/isprs-annals-IV-2-33-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
 
28 May 2018
IFCWALL RECONSTRUCTION FROM UNSTRUCTURED POINT CLOUDS
M. Bassier, R. Klein, B. Van Genechten, and M. Vergauwen Dept. of Civil Engineering, TC Construction - Geomatics KU Leuven - Faculty of Engineering Technology Ghent, Belgium
Keywords: Building Information Modeling, Reconstruction, Wall, Building Point Clouds Abstract. The automated reconstruction of Building Information Modeling (BIM) objects from point cloud data is still ongoing research. A key aspect is the creation of accurate wall geometry as it forms the basis for further reconstruction of objects in a BIM. After segmenting and classifying the initial point cloud, the labelled segments are processed and the wall topology is reconstructed. However, the preocedure is challenging due to noise, occlusions and the complexity of the input data.
In this work, a method is presented to automatically reconstruct consistent wall geometry from point clouds. More specifically, the use of room information is proposed to aid the wall topology creation. First, a set of partial walls is constructed based on classified planar primitives. Next, the rooms are identified using the retrieved wall information along with the floors and ceilings. The wall topology is computed by the intersection of the partial walls conditioned on the room information. The final wall geometry is defined by creating IfcWallStandardCase objects conform the IFC4 standard. The result is a set of walls according to the as-built conditions of a building. The experiments prove that the used method is a reliable framework for wall reconstruction from unstructured point cloud data. Also, the implementation of room information reduces the rate of false positives for the wall topology. Given the walls, ceilings and floors, 94% of the rooms is correctly identified. A key advantage of the proposed method is that it deals with complex rooms and is not bound to single storeys.

Conference paper (PDF, 5133 KB)

Citation: Bassier, M., Klein, R., Van Genechten, B., and Vergauwen, M.: IFCWALL RECONSTRUCTION FROM UNSTRUCTURED POINT CLOUDS, ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., IV-2, 33-39, https://doi.org/10.5194/isprs-annals-IV-2-33-2018, 2018.

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