Visual Place Recognition for Autonomous Mobile Robots

Horst M, Möller R (2017)
Robotics 6(2): 9.

OA 13.01 MB
Journal Article | Original Article | Published | English
Place recognition is an essential component of autonomous mobile robot navigation. It is used for loop-closure detection to maintain consistent maps, or to localize the robot along a route, or in kidnapped-robot situations. Camera sensors provide rich visual information for this task. We compare different approaches for visual place recognition: holistic methods (visual compass and warping), signature-based methods (using Fourier coefficients or feature descriptors (able for binary-appearance loop-closure evaluation, ABLE)), and feature-based methods (fast appearance-based mapping, FabMap). As new contributions we investigate whether warping, a successful visual homing method, is suitable for place recognition. In addition, we extend the well-known visual compass to use multiple scale planes, a concept also employed by warping. To achieve tolerance against changing illumination conditions, we examine the NSAD distance measure (normalized sum of absolute differences) on edge-filtered images. To reduce the impact of illumination changes on the distance values, we suggest to compute ratios of image distances to normalize these values to a common range. We test all methods on multiple indoor databases, as well as a small outdoor database, using images with constant or changing illumination conditions. ROC analysis (receiver-operator characteristics) and the metric distance between best-matching image pairs are used as evaluation measures. Most methods perform well under constant illumination conditions, but fail under changing illumination. The visual compass using the NSAD measure on edge-filtered images with multiple scale planes, while being slower than signature methods, performs best in the latter case
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Financial disclosure
Article Processing Charge funded by the Deutsche Forschungsgemeinschaft and the Open Access Publication Fund of Bielefeld University.

Cite this

Horst M, Möller R. Visual Place Recognition for Autonomous Mobile Robots. Robotics. 2017;6(2): 9.
Horst, M., & Möller, R. (2017). Visual Place Recognition for Autonomous Mobile Robots. Robotics, 6(2), 9. doi:10.3390/robotics6020009
Horst, M., and Möller, R. (2017). Visual Place Recognition for Autonomous Mobile Robots. Robotics 6:9.
Horst, M., & Möller, R., 2017. Visual Place Recognition for Autonomous Mobile Robots. Robotics, 6(2): 9.
M. Horst and R. Möller, “Visual Place Recognition for Autonomous Mobile Robots”, Robotics, vol. 6, 2017, : 9.
Horst, M., Möller, R.: Visual Place Recognition for Autonomous Mobile Robots. Robotics. 6, : 9 (2017).
Horst, Michael, and Möller, Ralf. “Visual Place Recognition for Autonomous Mobile Robots”. Robotics 6.2 (2017): 9.
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