Division-based analysis of symmetry and its application
S. Fukushima · IEEE Transactions on Pattern Analysis and Machine Intelligence · 1997
A computational method, DAS, is proposed for symmetry analysis of a planar figure closed by a simply connected curve. DAS determines both the symmetric axis and the symmetric point pairs on the curve, consistently, based on the duality of two geometric plane divisions, the Delaunay triangulation and the Voronoi diagram.