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Authors: Regina Pohle-Fröhlich 1 ; Aaron Bohm 2 ; Peer Ueberholz 2 ; Maximilian Korb 1 and Steffen Goebbels 1

Affiliations: 1 Institute for Pattern Recognition, Faculty of Electrical Engineering and Computer, Niederrhein University of Applied Sciences, Reinarzstr. 49, 47805 Krefeld, Germany ; 2 Institute for High Performance Computing, Faculty of Electrical Engineering and Computer Science, Niederrhein University of Applied Sciences, Reinarzstr. 49, 47805 Krefeld, Germany

ISBN: 978-989-758-354-4

Keyword(s): Building Reconstruction, Deep Learning, Convolutional Neural Networks, Point Clouds.

Abstract: The given paper investigates deep neural networks (DNNs) for segmentation of roof regions in the context of 3D building reconstruction. Point clouds as well as derived depth and density images are used as input data. For 3D building model generation we follow a data driven approach, because it allows the reconstruction of roofs with more complex geometries than model driven methods. For this purpose, we need a preprocessing step that segments roof regions of buildings according to the orientation of their slopes. In this paper, we test three different DNNs and compare results with standard methods using thresholds either on gradients of 2D height maps or on point normals. For the application of a U-Net, we transform point clouds to structured 2D height maps, too. PointNet and PointNet++ directly accept unstructured point clouds as input data. Compared to classical gradient and normal based threshold methods, our experiments with U-Net and PointNet++ lead to better segmentation of roof structures. (More)

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Paper citation in several formats:
Pohle-Fröhlich, R.; Bohm, A.; Ueberholz, P.; Korb, M. and Goebbels, S. (2019). Roof Segmentation based on Deep Neural Networks.In Proceedings of the 14th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 4: VISAPP, ISBN 978-989-758-354-4, pages 326-333. DOI: 10.5220/0007343803260333

@conference{visapp19,
author={Regina Pohle{-}Fröhlich. and Bohm, A. and Peer Ueberholz. and Maximilian Korb. and Steffen Goebbels.},
title={Roof Segmentation based on Deep Neural Networks},
booktitle={Proceedings of the 14th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 4: VISAPP,},
year={2019},
pages={326-333},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0007343803260333},
isbn={978-989-758-354-4},
}

TY - CONF

JO - Proceedings of the 14th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 4: VISAPP,
TI - Roof Segmentation based on Deep Neural Networks
SN - 978-989-758-354-4
AU - Pohle-Fröhlich, R.
AU - Bohm, A.
AU - Ueberholz, P.
AU - Korb, M.
AU - Goebbels, S.
PY - 2019
SP - 326
EP - 333
DO - 10.5220/0007343803260333

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