Convergent Plug-and-Play Image Restoration with Annealed Noise Levels
This work establishes convergence guarantees for a broad family of Plug-and-Play algorithms with annealed noise level, spanning deterministic methods (RED and PnP--PGD) and stochastic methods (SNORE, equivariant RED, and a variant of PnP--Flow) and proves asymptotic stationarity of the iterates with respect to this obj...