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2008

Coarse-to-Fine Segmentation and Tracking Using Sobolev Active Contours

8 years 10 months ago
Coarse-to-Fine Segmentation and Tracking Using Sobolev Active Contours
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 gradients associated to these energies. Sobolev active contours evolve more globally and are less attracted to certain intermediate local minima than traditional active contours, and it is based on a wellstructured Riemannian metric, which is important for shape analysis and shape priors. In this paper, we analyze Sobolev active contours using scale-space analysis in order to understand their evolution across different scales. This analysis shows an extremely important and useful behavior of Sobolev contours, namely, that they move successively from coarse to increasingly finer scale motions in a continuous manner. This property illustrates that one justification for using the Sobolev technique is for applications where coarse-scale deformations are preferred over fine-scale deformations. Along with o...
Ganesh Sundaramoorthi, Anthony J. Yezzi, Andrea Me
Added 14 Dec 2010
Updated 14 Dec 2010
Type Journal
Year 2008
Where PAMI
Authors Ganesh Sundaramoorthi, Anthony J. Yezzi, Andrea Mennucci
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