Image-to-image registration by consensus of patch-to-image registrations.
The algorithm is described in Subsection 3.2 of Marcelo Cicconet, David G. C. Hildebrand, and Hunter Elliott. Finding Mirror Symmetry via Registration and Optimal Symmetric Pairwise Assignment of Curves. IEEE ICCV, Detecting Symmetry in the Wild Workshop, 2017. http://openaccess.thecvf.com/content_ICCV_2017_workshops/papers/w24/Cicconet_Finding_Mirror_Symmetry_ICCV_2017_paper.pdf