An efficient method for obtaining morphological skeletons☆

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Abstract

A new method using gray-scale morphological erosion is proposed to obtain the morphological skeleton of a discrete binary image. The full morphological skeleton is the union of a finite number of skeleton subsets. We also show that gray-scale erosion in this method can be replaced by a simpler operation to further improve computation time. Two efficient algorithms based on the proposed approach are presented.

Keywords

Morphology
dilation
erosion
skeleton
Euclidean
city-block
chessboard

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This work was supported by the National Science Foundation under Grant Number IRI-8909188 and the New York State Center for Advanced Technology in Telecommunications.

Copyright © 1993 Published by Elsevier B.V.