Rotorcraft collision avoidance using spherical image-based visual servoing and single point features
Mcfadyen, Aaron, Corke, Peter, & Mejias, Luis (2012) Rotorcraft collision avoidance using spherical image-based visual servoing and single point features. In IEEE/RSJ International Conference on Intelligent Robots and Systems, IEEE, Hotel Tivoli Marina Vilamoura, Algarve.
This paper presents a reactive collision avoidance method for small unmanned rotorcraft using spherical image-based visual servoing. Only a single point feature is used to guide the aircraft in a safe spiral like trajectory around the target, whilst a spherical camera model ensures the target always remains visible. A decision strategy to stop the avoidance control is derived based on the properties of spiral like motion, and the effect of accurate range measurements on the control scheme is discussed. We show that using a poor range estimate does not significantly degrade the collision avoidance performance, thus relaxing the need for accurate range measurements. We present simulated and experimental results using a small quad rotor to validate the approach.
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|Item Type:||Conference Paper|
|Keywords:||Collision Avoidance, Visual Servoing, Aerial Robotics|
|Subjects:||Australian and New Zealand Standard Research Classification > INFORMATION AND COMPUTING SCIENCES (080000) > ARTIFICIAL INTELLIGENCE AND IMAGE PROCESSING (080100) > Computer Vision (080104)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > AEROSPACE ENGINEERING (090100) > Aircraft Performance and Flight Control Systems (090104)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Control Systems Robotics and Automation (090602)
|Divisions:||Current > Research Centres > Australian Research Centre for Aerospace Automation
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Deposited On:||01 Nov 2012 02:54|
|Last Modified:||20 Feb 2013 09:52|
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