3 papers
math.OC2021
A scaled, inexact and adaptive Fast Iterative Soft-Thresholding Algorithm for convex image restoration
Luca Calatroni, Simone Rebegoldi
In this note, we consider a special instance of the scaled, inexact and adaptive generalised Fast Iterative Soft-Thresholding Algorithm (SAGE-FISTA) recently proposed in (Rebegoldi…
math.OC2021
Scaled, inexact and adaptive generalized FISTA for strongly convex optimization
Simone Rebegoldi, Luca Calatroni
We consider a variable metric and inexact version of the FISTA-type algorithm considered in (Chambolle, Pock, 2016, Calatroni, Chambolle, 2019) for the minimization of the sum of t…
eess.IV2020
Weighted-CEL0 sparse regularisation for molecule localisation in super-resolution microscopy with Poisson data
Marta Lazzaretti, Luca Calatroni, Claudio Estatico
We propose a continuous non-convex variational model for Single Molecule Localisation Microscopy (SMLM) super-resolution in order to overcome light diffraction barriers. Namely, we…