Tikhonov Regularization of Circle-Valued Signals
Optimization and Control
2022-06-08 v3 Computer Vision and Pattern Recognition
Signal Processing
Abstract
It is common to have to process signals or images whose values are cyclic and can be represented as points on the complex circle, like wrapped phases, angles, orientations, or color hues. We consider a Tikhonov-type regularization model to smoothen or interpolate circle-valued signals defined on arbitrary graphs. We propose a convex relaxation of this nonconvex problem as a semidefinite program, and an efficient algorithm to solve it.
Cite
@article{arxiv.2108.02602,
title = {Tikhonov Regularization of Circle-Valued Signals},
author = {Laurent Condat},
journal= {arXiv preprint arXiv:2108.02602},
year = {2022}
}