The process of finding representative shape patterns from sparse datasets is a challenging task: especially for non-rigid objects, shape deformations through time can produce very different sets of corners from frame to frame and a proper comparison of point features can be very difficult. Evaluating a multi-objective fitness function in a discrete voting space, partial similarities between deformable objects can be found and a correct data association can be performed. A genomic encoding of corner-based shapes is introduced and, taking advantage of a robust genetic-based search algorithm, sets of corners pertaining to objects of interest are mapped into common models. The most representative features are detected and used to evolve shape prototypes.
Stefano Maludrottu, Hany Sallam, Carlo S. Regazzon