A Fast Parallel Algorithm for Thinning Digital Patterns

@article{Zhang1984AFP,
  title={A Fast Parallel Algorithm for Thinning Digital Patterns},
  author={T. Y. Zhang and Ching Y. Suen},
  journal={Commun. ACM},
  year={1984},
  volume={27},
  pages={236-239}
}
A fast parallel thinning algorithm is proposed in this paper. It consists of two subiterations: one aimed at deleting the south-east boundary points and the north-west corner points while the other one is aimed at deleting the north-west boundary points and the south-east corner points. End points and pixel connectivity are preserved. Each pattern is thinned down to a "skeleton" of unitary thickness. Experimental results show that this method is very effective. 
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