Squares that Look Round: Transforming Spherical Images
Saul Schleimer and Henry Segerman

Proceedings of Bridges 2016: Mathematics, Music, Art, Architecture, Education, Culture
Pages 15–24
Regular Papers

Abstract

We propose Möbius transformations as the natural rotation and scaling tools for editing spherical images. As an application we produce spherical Droste images. We obtain other self-similar visual effects using rational functions, elliptic functions, and Schwarz-Christoffel maps.

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