A Piggyback-Style Algorithm for Learning Improved Shearlets and TGV Discretizations

L. Bogensperger, A. Chambolle, T. Pock

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A Piggyback-Style Algorithm for Learning Improved Shearlets and TGV Discretizations

L. Bogensperger, A. Chambolle, T. Pock

Abstract

This work demonstrates how to use a piggyback-style algorithm to compute derivatives of loss functions that depend on solutions of convex-concave saddle-point problems. Two application scenarios are presented, where the piggyback primal-dual algorithm is used to learn an enhanced shearlet transform and an improved discretization of the second-order total generalized variation.

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L. Bogensperger, A. Chambolle and T. Pock, A Piggyback-Style Algorithm for Learning Improved Shearlets and TGV Discretizations, in: admos2023. URL https://www.scipedia.com/public/Bogensperger_et_al_2023a

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Published on 26/05/23
Submitted on 26/05/23

Volume Adaptive Modelling, Optimisation and Learning Strategies for Image Analysis, 2023
DOI: 10.23967/admos.2023.013
Licence: CC BY-NC-SA license

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