Meshing and Simplification of High Resolution Urban Surface Data for UAV Path Planning

  • Authors:
  • Florian-M. Adolf;Heiko Hirschmüller

  • Affiliations:
  • Department of Unmanned Aircraft, DLR Institute of Flight Systems, Braunschweig, Germany 38108;Department of Perception and Kognition, DLR Institute of Robotics and Mechatronics, Oberpfaffenhofen-Wessling, Germany 82234

  • Venue:
  • Journal of Intelligent and Robotic Systems
  • Year:
  • 2011

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Abstract

This work presents an approach to utilize high resolution surface data as a-priori information for three dimensional path planning at very low altitude. The major challenge is preserve features while reducing the amount of data to a minimum. Non significant height points are eliminated by a neighbor search, performed within a data structure generated from pseudo 3D Delaunay meshing. A comparison to an alternatively implemented simplification shows which inherent building features can be preserved. For highlighting the feasibility of the approach, the processing results of real urban surface data from the inner city of Berlin is presented and used for sampling based path planning of an unmanned helicopter.