We introduce a novel method for visual homing. Using this method a robot can be sent to desired positions and orientations in 3-D space specified by single images taken from these positions. Our method determines the path of the robot on-line. The starting position of the robot is not constrained, and a 3-D model of the environment is not required. The method is based on recovering the epipolar geometry relating the current image taken by the robot and the target image. Using the epipolar geometry, most of the parameters which specify the differences in position and orientation of the camera between the two images are recovered. However, since not all of the parameters can be recovered from two images, we have developed specific methods to bypass these missing parameters and resolve the ambiguities that exist. We present two homing algorithms for two standard projection models, weak and full perspective. We have performed simulations and real experiments which demonstrate the robustness of the method and that the algorithms always converge to the target pose.


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    Title :

    Visual homing: surfing on the epipoles


    Contributors:
    Basri, R. (author) / Rivlin, E. (author) / Shimshoni, I. (author)


    Publication date :

    1998-01-01


    Size :

    840878 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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