The authors develop previous theories of the analysis of deformation of apparent contours under viewer motion. Earlier results showing how surface curvature can be inferred from acceleration of image features are generalized for arbitrary viewer motion and perspective projection. It is shown that relative image acceleration, based on parallax measurements, is robust to uncertainties in robot motion. The theory has been implemented and extensively tested in a real-time (15 frames per second) tracking system based on deformable contours (snakes). It is shown that focusing attention by means of snakes allows rapid, robust computation of surface curvature, including discrimination of extremal and occluding contours.<>


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    Titel :

    The dynamic analysis of apparent contours


    Beteiligte:
    Cipolla, R. (Autor:in) / Blake, A. (Autor:in)


    Erscheinungsdatum :

    01.01.1990


    Format / Umfang :

    674337 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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    Surface Geometry from Cusps of Apparent Contours

    Cipolla, R. / Fletcher, G. / Giblin, P. et al. | British Library Conference Proceedings | 1995


    Surface Shape from the Deformation of Apparent Contours

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    Kakadiaris, I. / Metaxas, D. / Bajcsy, R. | British Library Online Contents | 1997


    Structure and motion estimation from apparent contours under circular motion

    Wong, KYK / Mendonça, PRS / Cipolla, R | BASE | 2002

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