Thinning combined with iteration-by-iteration smoothing for 3D binary images

1524-0703/$ see front matter 2011 Elsevier Inc doi:10.1016/j.gmod.2011.02.001 ⇑ Corresponding author. Fax: +36 62 546397. E-mail addresses: [email protected] (G. inf.u-szeged.hu (P. Kardos), [email protected] In this work we present a new thinning scheme for reducing the noise sensitivity of 3D thinning algorithms. It uses iteration-by-iteration smoothing that removes some border points that are considered as extremities. The proposed smoothing algorithm is composed of two parallel topology preserving reduction operators. An efficient implementation of our algorithm is sketched and its topological correctness for (26, 6) pictures is proved. 2011 Elsevier Inc. All rights reserved.