Multi-scale and hierarchical description using energy controlled active balloon model

A novel multiscale tree construction algorithm for three dimensional shape using energy controlled active balloon model (EC-ABM) is proposed. The key idea is that (1) internal and external energies and a number of surfaces which make up the ABM are controlled at each shrinking steps, and (2) each converged shape is regarded as one multiscale shape. Some experimental three dimensional recognition result of the proposed method with human face data are shown