  In this paper, we propose a method for computing partial functional
correspondence between non-rigid shapes. We use perturbation analysis to show
how removal of shape parts changes the Laplace-Beltrami eigenfunctions, and
exploit it as a prior on the spectral representation of the correspondence.
Corresponding parts are optimization variables in our problem and are used to
weight the functional correspondence; we are looking for the largest and most
regular (in the Mumford-Shah sense) parts that minimize correspondence
distortion. We show that our approach can cope with very challenging
correspondence settings.
