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Residuals + directional gaps = skeletons

AuthorsCardoner, Rafael; Thomas, Federico
KeywordsThinning algorithms
Run-length encoding
Mathematical morphology
Issue Date1997
CitationPattern Recognition Letters 18(4): 343-353 (1997)
AbstractMany thinning algorithms for 2D binary images, or modifications of existing ones, have been proposed in recent years. The one given herein is surprisingly simple compared to most of them, and still it has theoretically favorable properties. Actually, it provides a connected - single-pixel in width whenever possible - well-centered homototic skeleton that allows shapes to be nearly reconstructed. In addition to these properties, it is also very attractive because of its generalization to higher dimensions. The presented algorithm is based on the application of directional erosions, while retaining those pixels that introduce disconnections. It is shown how this strategy is specially well-suited for run-length encoded images, leading to a very fast and simple thinning algorithm.
Publisher version (URL)http://dx.doi.org/10.1016/S0167-8655(97)00021-4
Appears in Collections:(IRII) Artículos
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