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Autonomous Robots

, Volume 40, Issue 5, pp 761–787 | Cite as

Map evaluation using matched topology graphs

  • Sören SchwertfegerEmail author
  • Andreas Birk
Article

Abstract

Mapping is an important task for mobile robots. The assessment of the quality of maps in a simple, efficient and automated way is not trivial and an ongoing research topic. Here, a new approach for the evaluation of 2D grid maps is presented. This structure-based method makes use of a topology graph, i.e., a topological representation that includes abstracted local metric information. It is shown how the topology graph is constructed from a Voronoi diagram that is pruned and simplified such that only high level topological information remains to concentrate on larger, topologically distinctive places. Several methods for computing the similarity of vertices in two topology graphs, i.e., for performing a place-recognition, are presented. Based on the similarities, it is shown how subgraph-isomorphisms can be efficiently computed and two topology graphs can be matched. The match between the graphs is then used to calculate a number of standard map evaluation attributes like coverage, global accuracy, relative accuracy, consistency, and brokenness. Experiments with robot generated maps are used to highlight the capabilities of the proposed approach and to evaluate the performance of the underlying algorithms.

Keywords

Mobile robot Performance metric Map quality Ground truth comparison Topology Place recognition Simultaneous localization and mapping (SLAM ) 

Notes

Acknowledgments

The authors would like to thank all RoboCup Rescue teams that agreed to have their maps published in the context of this research: CASualty: University of New South Wales, Australia and Resko: University of Koblenz, Germany.

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.School of Information Science and TechnologyShanghaiTech UniversityShanghaiChina
  2. 2.Department of Electrical Engineering and Computer ScienceJacobs University BremenBremenGermany

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