Real-time object classification in 3D point clouds using point feature histograms

Authors:
M. Himmelsbach;T. Luettel;H.-J. Wuensche
Affiliations:
Department of Aerospace Engineering, Autonomous Systems Technology, University of the Bundeswehr Munich, Neubiberg, Germany;Department of Aerospace Engineering, Autonomous Systems Technology, University of the Bundeswehr Munich, Neubiberg, Germany;Department of Aerospace Engineering, Autonomous Systems Technology, University of the Bundeswehr Munich, Neubiberg, Germany
Venue:
IROS'09 Proceedings of the 2009 IEEE/RSJ international conference on Intelligent robots and systems
Year:
2009

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Abstract

This paper describes a LIDAR-based perception system for ground robot mobility, consisting of 3D object detection, classification and tracking. The presented system was demonstrated on-board our autonomous ground vehicle MuCAR-3, enabling it to safely navigate in urban traffic-like scenarios as well as in off-road convoy scenarios. The efficiency of our approach stems from the unique combination of 2D and 3D data processing techniques. Whereas fast segmentation of point clouds into objects is done in a 2 1/2D occupancy grid, classifying the objects is done on raw 3D point clouds. For fast object feature extraction, we advocate the use of statistics of local point cloud properties, captured by histograms over point features. In contrast to most existing work on 3D point cloud classification, where real-time operation is often impossible, this combination allows our system to perform in real-time at 0.1s frame-rate.