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Expanding selfsimilar solutions of a crystalline flow with applications to contour figure analysis. (English) Zbl 1117.65036
Summary: A numerical method for obtaining a crystalline flow starting from a general polygon is presented. A crystalline flow is a polygonal flow and can be regarded as a discrete version of a classical curvature flow. In some cases, new facets may be created instantaneously and their facet lengths are governed by a system of singular ordinary differential equations (ODEs). The proposed method solves the system of the ODEs numerically by using expanding selfsimilar solutions for newly created facets. The computation method is applied to a multi-scale analysis of a contour figure.

##### MSC:
 65D18 Numerical aspects of computer graphics, image analysis, and computational geometry 52A99 General convexity 94A08 Image processing (compression, reconstruction, etc.) in information and communication theory
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##### References:
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