Addresses the problem of estimating the structure and motion of a smooth curved object from its silhouettes observed over time by a trinocular stereo rig under perspective projection. We first construct a model for the local structure along the silhouette for each frame in the temporal sequence. Successive local models are then integrated into a global surface description by estimating the motion between successive time instants. The algorithm tracks certain surface features (parabolic points) and image features (silhouette inflections and frontier points) which are used to bootstrap the motion estimation process. The entire silhouette along with the reconstructed local structure are then used to refine the initial motion estimate. We have implemented the proposed approach and report results on real images.<>


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    Title :

    Structure and motion estimation from dynamic silhouettes under perspective projection


    Contributors:
    Joshi, T. (author) / Ahuja, N. (author) / Ponce, J. (author)


    Publication date :

    1995-01-01


    Size :

    640317 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Structure and Motion Estimation from Dynamic Silhouettes under Perspective Projection

    Joshi, T. / Ahuja, N. / Ponce, J. et al. | British Library Conference Proceedings | 1995


    Structure and Motion Estimation from Dynamic Silhouettes under Perspective Projection

    Joshi, T. / Ahuja, N. / Ponce, J. | British Library Online Contents | 1999


    Towards Structure and Motion Estimation from Dynamic Silhouettes

    Joshi, T. / Ahuja, N. / Ponce, J. et al. | British Library Conference Proceedings | 1994


    Towards structure and motion estimation from dynamic silhouettes

    Joshi, T. / Ahuja, N. / Ponce, J. | IEEE | 1994


    Structure and motion from silhouettes

    Wong, K.-Y.K. / Cipolla, R. | IEEE | 2001