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math.OC2022
Multilevel fista for image restoration
Guillaume Lauga, Elisa Riccietti, Nelly Pustelnik +1
This paper presents a multilevel FISTA algorithm, based on the use of the Moreau envelope to build the correction brought by the coarse models, which is easy to compute when the ex…
math.OC2019
Strongly Convex Optimization for Joint Fractal Feature Estimation and Texture Segmentation
Barbara Pascal, Nelly Pustelnik, Patrice Abry
The present work investigates the segmentation of textures by formulating it as a strongly convex optimization problem, aiming to favor piecewise constancy of fractal features (loc…