The representation and modelling of regions is an important topic in computer vision. In this paper, we represent a region via a level set of a 'phase field' function. The function is not constrained, e.g. to be a distance function; nevertheless, phase field energies equivalent to classical active contour energies can be defined. They represent an advantageous alternative to other methods: a linear representation space; ease of implementation (a PDE with no reinitialization); neutral initialization; greater topological freedom. We extend the basic phase field model with terms that reproduce 'higher-order active contour' energies, a powerful way of including prior geometric knowledge in the active contour framework via nonlocal interactions between contour points, in addition to the above advantages, the phase field greatly simplifies the analysis and implementation of the higher-order terms. We define a phase field model that favours regions composed of thin arms meeting at junctions, combine this with image terms, and apply the model to the extraction of line networks from remote sensing images.


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    Titel :

    Phase field models and higher-order active contours


    Beteiligte:
    Rochery, M. (Autor:in) / Jermyn, I. (Autor:in) / Zerubia, J. (Autor:in)


    Erscheinungsdatum :

    2005-01-01


    Format / Umfang :

    348453 byte





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Phase Field Models and Higher-Order Active Contours

    Rochery, M. / Jermyn, I. / Zerubia, J. et al. | British Library Conference Proceedings | 2005


    Higher Order Active Contours

    Rochery, M. / Jermyn, I. H. / Zerubia, J. | British Library Online Contents | 2006


    Extended Phase Field Higher-Order Active Contour Models for Networks

    Peng, T. / Jermyn, I. H. / Prinet, V. r. et al. | British Library Online Contents | 2010


    Multiscale Active Contours

    Bresson, X. / Vandergheynst, P. / Thiran, J. P. | British Library Online Contents | 2006


    Geodesic Active Contours

    Caselles, V. / Kimmel, R. / Sapiro, G. et al. | British Library Conference Proceedings | 1995