2 papers
cs.CV2026
Landmark shape spaces with induced metrics
Sarang Joshi, Peter W. Michor, Stefan Sommer
We present a unification of Kendall's landmark shape spaces, where rigid motions are factored out and scale fixed on landmark configurations equipped with Euclidean geometry, with…
math.GR2026
A Diffeomorphism Groupoid and Algebroid Framework for Discontinuous Image Registration
Lili Bao, Bin Xiao, Shihui Ying +1
In this paper, we propose a novel mathematical framework for piecewise diffeomorphic image registration that involves discontinuous sliding motion using a diffeomorphism groupoid a…