This paper demonstrates how a recently reported shape-from-shading scheme can be used to extract topographic information from 2D intensity imagery. The shape-from-shading scheme has two novel ingredients. Firstly, it uses a geometric update procedure which allows the image irradiance equation to be satisfied as a hard-constraint. This not only improves the data-closeness of the recovered needle-map, but also removes the necessity for extensive parameter tuning. Secondly, we use curvature information to impose topographic constraints on the recovered needle-map. The topographic information is captured using the shape-index of Koenderink and VanDoorn (1992) and consistency is imposed using a robust error function. We show that the new shape-from-shading scheme leads to a meaningful topographic labelling of 3D surface structures.


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    Titel :

    Surface topography using shape-from-shading


    Beteiligte:
    Worthington, P.L. (Autor:in) / Hancock, E.R. (Autor:in)


    Erscheinungsdatum :

    01.01.1999


    Format / Umfang :

    331074 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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