Affine-invariant geometric shape priors for region-based active contours.
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.
Foulonneau
Alban
A
Laboratoire Régional des Ponts et Chaussées de Strasbourg, 11 rue Jean Mentelin, BP 9, 67035 Strasbourg, France. alban.foulonneau@equipement.gouv.fr
Charbonnier
Pierre
P
Heitz
Fabrice
F
D000465:Algorithms; D001185:Artificial Intelligence; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods; D016247:Information Storage and Retrieval / Q000379:methods; D010363:Pattern Recognition, Automated / Q000379:methods*