Robust embedded egomotion estimation

Robust embedded egomotion estimation,10.1109/IROS.2011.6048855,Rainer Voigt,Janosch Nikolic,Christoph Hurzeler,Stephan Weiss,Laurent Kneip,Roland Sieg

Robust embedded egomotion estimation  
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This work presents a method for estimating the egomotion of an aerial vehicle in challenging industrial environments. It combines binocular visual and inertial cues in a tightly-coupled fashion and operates in real time on an embedded platform. An extended Kalman filter fuses measurements and makes motion estimation rely more on inertial data if visual feature constellation is degenerate. Errors in roll and pitch are bounded implicitly by the gravity vector. Inertial sensors are used for efficient outlier detection and enable operation in poorly and repetitively textured environments. We demonstrate robustness and accuracy in an industrial scenario as well as in general indoor environments. The former is accompanied by a detailed performance evaluation supported with ground truth measurements from an external tracking system.
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