We have developed a combined feature based and shape based visual tracking system designed to enable a planetary rover to visually track and servo to specific points chosen by a user with centimeter precision. The feature based tracker uses invariant feature detection and matching across a stereo pair, as well as matching pairs before and after robot movement in order to compute an incremental 6-DOF motion at each tracker update. This tracking method is subject to drift over time, which can be compensated by the shape based method. The shape based tracking method consists of 3D model registration, which recovers 6-DOF motion given sufficient shape and proper initialization. By integrating complementary algorithms, the combined tracker leverages the efficiency and robustness of feature based methods with the precision and accuracy of model registration. In this paper, we present the algorithms and their integration into a combined visual tracking system.


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    Title :

    Combined feature based and shape based visual tracker for robot navigation


    Contributors:
    Deans, M. (author) / Kunz, C. (author) / Sargent, R. (author) / Park, E. (author) / Pedersen, L. (author)

    Published in:

    Publication date :

    2005


    Size :

    8 Seiten, 27 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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