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We introduce a new Euclidian distance transformation (EDT) for binary images in Zn, n >= 3 by combining our sufficient propagation EDT with the method of Saito and Toriwaki. Test in Z3 show that this new method is always faster than the well known EDTs and, especially, faster than the raster-scanning chamfer distance transformation. Moreover, we can efficiently implement it in parallel using a divide-and-conquer strategy.
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