- W. H. Hesselink, J. B. T. M. Roerdink: Euclidean skeletons of
digital image and volume data in linear time by integer medial axis
transform. IEEE Trans. Pattern Anal. Machine Intell.
**30**(2008) 2204--2217. Some code is available.

See also W. H. Hesselink, M. Visser, J. B. T. M. Roerdink: Euclidean skeletons of 3D data sets in linear time by the integer medial axis transform. In Mathematical Morphology: 40 Years On (Proc. 7th Intern. Symp. on Mathematical Morphology, April 2005), pages 259-268. Springer V. 2005. - W. H. Hesselink:
A linear-time algorithm for Euclidean feature transform sets.
Information Processing Letters
**102**(2007) 181-186.

Also available: Distance transforms and feature transform sets, an extension and modification of the IPL paper.

- M. H. F. Wilkinson, H. Gao, W. H. Hesselink, J.-E. Jonker,
A. Meijster: Concurrent computation of attribute filters on shared
memory parallel machines. IEEE Trans. Pattern Anal. Machine
Intell.
**30**(2008) 1800-1813. PDF preprint(364 kB) available. - W. H. Hesselink:
Salembier's Min-tree algorithm turned into breadth first
search.
Information Processing Letters
**88**(2003) 225-229.

Comments and questions are welcome.

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Wim H. Hesselink