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Communication Dans Un Congrès Année : 2020

Primal-dual splitting scheme with backtracking for handling with epigraphic constraint and sparse analysis regularization

Résumé

The convergence of many proximal algorithms involving a gradient descent relies on its Lipschitz constant. To avoid computing it, backtracking rules can be used. While such a rule has already been designed for the forward-backward algorithm (FBwB), this scheme is not flexible enough when a non-differentiable penalization with a linear operator is added to a constraint. In this work we propose a backtracking rule for the primal-dual scheme (PDwB), and evaluate its performance for the epigraphical constrained high dynamical reconstruction in high contrast polarimetric imaging, under TV penalization.

Dates et versions

hal-03040478 , version 1 (04-12-2020)

Identifiants

Citer

Laurence Denneulin, Nelly Pustelnik, M Langlois, Ignace Loris, Eric Thiébaut. Primal-dual splitting scheme with backtracking for handling with epigraphic constraint and sparse analysis regularization. iTwist, Dec 2020, Nantes, France. ⟨hal-03040478⟩
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