A multilayer self-organizing model for convex-hull computation

A self-organizing neural-network model is proposed for computation of the c onvex-hull of a given set of planar points. The network evolves in such a m anner that it adapts itself to the hull-vertices of the convex-hull. The pr oposed network consists of three layers of processors. The bottom layer com putes some angles which are passed to the middle layer. The middle layer is used for computation of the minimum angle (winner selection). These inform ation are passed to the topmost layer as well as fed back to the bottom lay er. The network in the topmost layer self-organizes by labeling the hull-pr ocessors in an orderly fashion so that the final convex-bull is obtained fr om the topmost layer. Time complexity of the proposed model is analyzed and is compared with existing models of similar nature.