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    Tracking with Sobolev Active Contours

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    cvpr_Tracking_with_Sobolev_AC.pdf (2.792Mb)
    Date
    2006-06
    Author
    Sundaramoorthi, Ganesh
    Jackson, Jeremy D.
    Yezzi, Anthony
    Mennucci, Andrea C.
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    Abstract
    Recently proposed Sobolev active contours introduced a new paradigm for minimizing energies defined on curves by changing the traditional cost of perturbing a curve and thereby redefining their gradients. Sobolev active contours evolve more globally and are less attracted to certain intermediate local minima than traditional active contours. In this paper we analyze Sobolev active contours in the Fourier domain in order to understand their evolution across different scales. This analysis shows an important and useful behavior of Sobolev contours, namely, that they move successively from coarse to increasingly finer scale motions in a continuous manner. Along with other properties, the previous observation reveals that Sobolev active contours are ideally suited for tracking problems that use active contours. Our purpose in this work is to show how a variety of active contour based tracking methods can be significantly improved merely by evolving the active contours according to the Sobolev method.
    URI
    http://hdl.handle.net/1853/48926
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    • Laboratory of Computational Computer Vision Publications [106]

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