Pointnet For The Automatic Classification Of Aerial Point Clouds

Pointnet For The Automatic Classification Of Aerial Point Clouds

Soilán, M. (University of Vigo)
Lindenbergh, R.C. (TU Delft Optical and Laser Remote Sensing)
Riveiro, B. (University of Vigo)
Sánchez-Rodríguez, A. (University of Vigo)

2019

During the last couple of years, there has been an increased interest to develop new deep learning networks specifically for processing 3D point cloud data. In that context, this work intends to expand the applicability of one of these networks, PointNet, from the semantic segmentation of indoor scenes, to outdoor point clouds acquired with Airborne Laser Scanning (ALS) systems. Our goal is to of assist the classification of future iterations of a national wide dataset such as the Actueel Hoogtebestand Nederland (AHN), using a classification model trained with a previous iteration. First, a simple application such as ground classification is proposed in order to prove the capabilities of the proposed deep learning architecture to perform an efficient point-wise classification with aerial point clouds. Then, two different models based on PointNet are defined to classify the most relevant elements in the case study data: Ground, vegetation and buildings. While the model for ground classification performs with a F-score metric above 96%, motivating the second part of the work, the overall accuracy of the remaining models is around 87%, showing consistency across different versions of AHN but with improvable false positive and false negative rates. Therefore, this work concludes that the proposed classification of future AHN iterations is feasible but needs more experimentation.

Aerial Laser Scanner
Deep Learning
Point Cloud Classification
Semantic Segmentation

http://resolver.tudelft.nl/uuid:c65cd27c-c4d4-4a54-8e95-c9a88a8ee096

https://doi.org/10.5194/isprs-annals-IV-2-W5-445-2019

2194-9042

ISPRS Annals of Photogrammetry, Remote Sensing and Spatial Information Sciences, 4 (2/W5), 445-452

4th ISPRS Geospatial Week 2019, 2019-06-10 → 2019-06-14, Enschede, Netherlands

Institutional Repository

journal article

© 2019 M. Soilán, R.C. Lindenbergh, B. Riveiro, A. Sánchez-Rodríguez