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We present a new way of constraining the evolution of a region-based active contour with respect to a reference shape. Minimizing a shape prior, defined as a distance between shape descriptors based on the Legendre moments of the characteristic function, leads to a geometric flow that can be used with benefits in a two-class segmentation application. The shape model includes intrinsic invariance with regard to pose and affine deformations.
Segmentation, active contours, region-based approach, Legendre moments, shape constraint, shape derivative, affine invariance.
Pierre Charbonnier, Fabrice Heitz, Alban Foulonneau, "Affine-Invariant Geometric Shape Priors for Region-Based Active Contours", IEEE Transactions on Pattern Analysis & Machine Intelligence, vol. 28, no. , pp. 1352-1357, August 2006, doi:10.1109/TPAMI.2006.154
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