The Structure of Shapes Scale Space Aspects of the (pre-) Symmetry Set
نویسندگان
چکیده
Shapes simplify under to the intrinsic heat equation the Mean Curvature Motion (MCM) forming a shape scale space. The same holds for a representation of the shape, viz. the Symmetry Set (SS), a superset of the Medial Axis. Its singularities under the MCM are known, opening possibilities to investigate its deep structure. As data structure we use so-called Gauss diagrams, structures that depend on the pre-Symmetry Set, the SS in parameter space. Its properties, as well as its evolution and singularities under MCM, are presented. The set of all possible Gauss diagrams under MCM form a directed graph with one end point, in which the shape’s scale space describes a specific path. These paths can be used for shape description and comparison.
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