Squares that Look Round: Transforming Spherical Images
arXiv:1605.01396
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.
10 pages, 9 figures with many subfigures