EVG-Thin: A Thinning Approximation to the Extended Voronoi Graph
Copyright (C) 2006 - Patrick Beeson (pbeeson at cs.utexas.edu)
This program is released under the GNU General Public License (GPL).
This code implements an extension of the pixel-based "thinning"
algorithm that finds skeletons of bitmaps. The classic thinning
algorithm is a fast approximation of the Voronoi diagram; however,
this software also approximates the Extended Voronoi graph. This code
was written to be applied in real-time to occupancy grids (from the
mobile robotics literature) where cells are either occupied, free, or
unknown, but it should work on bitmap images for other domains.