no code implementations • 18 Oct 2022 • Silvia Bonettini, Giorgia Franchini, Danilo Pezzi, Marco Prato
In this paper we present a bilevel optimization scheme for the solution of a general image deblurring problem, in which a parametric variational-like approach is encapsulated within a machine learning scheme to provide a high quality reconstructed image with automatically learned parameters.
1 code implementation • 2 Mar 2022 • Carmelo Scribano, Giorgia Franchini, Marco Prato, Marko Bertogna
Since their introduction the Trasformer architectures emerged as the dominating architectures for both natural language processing and, more recently, computer vision applications.
1 code implementation • 2 Jun 2020 • Tatiana A. Bubba, Mathilde Galinier, Matti Lassas, Marco Prato, Luca Ratti, Samuli Siltanen
We propose a novel convolutional neural network (CNN), called $\Psi$DONet, designed for learning pseudodifferential operators ($\Psi$DOs) in the context of linear inverse problems.
1 code implementation • 11 Dec 2018 • Carla Bertocchi, Emilie Chouzenoux, Marie-Caroline Corbineau, Jean-Christophe Pesquet, Marco Prato
Variational methods are widely applied to ill-posed inverse problems for they have the ability to embed prior knowledge about the solution.
no code implementations • 25 Jun 2014 • Silvia Bonettini, Alessandro Chiuso, Marco Prato
If the unknown impulse response is modeled as a Gaussian process with a suitable kernel, the maximization of the marginal likelihood leads to a challenging nonconvex optimization problem, which requires a stable and effective solution strategy.