
doi: 10.37236/78
In this article we outline a method that automatically transforms an Euclidean ornament into a hyperbolic one. The necessary steps are pattern recognition, symmetry detection, extraction of a Euclidean fundamental region, conformal deformation to a hyperbolic fundamental region and tessellation of the hyperbolic plane with this patch. Each of these steps has its own mathematical subtleties that are discussed in this article. In particular, it is discussed which hyperbolic symmetry groups are suitable generalizations of Euclidean wallpaper groups. Furthermore it is shown how one can take advantage of methods from discrete differential geometry in order to perform the conformal deformation of the fundamental region. Finally it is demonstrated how a reverse pixel lookup strategy can be used to obtain hyperbolic images with optimal resolution.
wallpaper groups, symmtry patterns, hyperbolic ornament, Pattern recognition, speech recognition, Elementary problems in hyperbolic and elliptic geometries, Reflection groups, reflection geometries, Non-Euclidean differential geometry, Circle packings and discrete conformal geometry, Conformal differential geometry
wallpaper groups, symmtry patterns, hyperbolic ornament, Pattern recognition, speech recognition, Elementary problems in hyperbolic and elliptic geometries, Reflection groups, reflection geometries, Non-Euclidean differential geometry, Circle packings and discrete conformal geometry, Conformal differential geometry
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