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Vision Based Position Control for MAVs Using One Single Circular Landmark

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Abstract

This paper presents a real-time vision based algorithm for 5 degrees-of-freedom pose estimation and set-point control for a Micro Aerial Vehicle (MAV). The camera is mounted on-board a quadrotor helicopter. Camera pose estimation is based on the appearance of two concentric circles which are used as landmark. We show that that by using a calibrated camera, conic sections, and the assumption that yaw is controlled independently, it is possible to determine the six degrees-of-freedom pose of the MAV. First we show how to detect the landmark in the image frame. Then we present a geometric approach for camera pose estimation from the elliptic appearance of a circle in perspective projection. Using this information we are able to determine the pose of the vehicle. Finally, given a set point in the image frame we are able to control the quadrotor such that the feature appears in the respective target position. The performance of the proposed method is presented through experimental results.

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Authors and Affiliations

  1. ETH Autonomous Systems Laboratory, 8092, Zurich, Switzerland

    Daniel Eberli, Davide Scaramuzza, Stephan Weiss & Roland Siegwart

Authors
  1. Daniel Eberli
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  2. Davide Scaramuzza
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  3. Stephan Weiss
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  4. Roland Siegwart
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Corresponding author

Correspondence to Davide Scaramuzza.

Additional information

The research leading to these results has received funding from the European Community’s Seventh Framework Programme (FP7/2007-2013) under grant agreement n. 231855 (sFly: http://www.sfly.org). Daniel Eberli is currently Master student at the ETH Zurich. Davide Scaramuzza is currently senior researcher and team leader at the ETH Zurich. Stephan Weiss is currently PhD student at the ETH Zurich. Roland Siegwart is full professor at the ETH Zurich and head of the Autonomous Systems Lab.

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Eberli, D., Scaramuzza, D., Weiss, S. et al. Vision Based Position Control for MAVs Using One Single Circular Landmark. J Intell Robot Syst 61, 495–512 (2011). https://doi.org/10.1007/s10846-010-9494-8

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  • DOI: https://doi.org/10.1007/s10846-010-9494-8

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