The authors present an approach for explicitly relating the shape of image contours to models of curved three-dimensional objects. This relationship is used for object recognition and positioning. Object models consist of collections of parametric surface patches and their intersection curves; this includes nearly all representations used in computer-aided geometric design and computer vision. The image contours considered are the projections of surface discontinuities and occluding contours. Elimination theory provides a method for constructing the implicity equation of the image contours of an object observed under orthographic or perspective projection. This equation is parameterized by the object's position and orientation with respect to the observer. Determining these parameters is reduced to a fitting problem between the theoretical contour and the observed data points. The approach readily extends to parameterized models. It has been implemented for a simple world composed of various surfaces of revolution and successfully tested on several real images.<>


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    Titel :

    On recognizing and positioning curved 3D objects from image contours


    Beteiligte:
    Ponce, J. (Autor:in) / Kriegman, D.J. (Autor:in)


    Erscheinungsdatum :

    01.01.1989


    Format / Umfang :

    675503 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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    Vijayakumar, B. / Kriegman, D. / Ponce, J. | British Library Online Contents | 1998


    Invariant-based recognition of complex curved 3D objects from image contours

    Vijayakumar, B. / Kriegman, D.J. / Ponce, J. | IEEE | 1995


    Invariant-Based Recognition of Complex Curved 3D Objects from Image Contours

    Vijaykumar, B. / Kriegman, D. / Ponce, J. et al. | British Library Conference Proceedings | 1995



    REDUCING WRINKLES IN COMPOSITE REINFORCEMENTS WITH CURVED CONTOURS

    GAGANDEEP SAINI / IAN EDWARD SCHROEDER / KURTIS SHULDBERG WILLDEN et al. | Europäisches Patentamt | 2023

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