A greedy algorithm to extract sparsity degree for l1/l0-equivalence in a deterministic context

This paper investigates the problem of designing a deterministic system matrix, that is measurement matrix, for sparse recovery. An efficient greedy algorithm is proposed in order to extract the class of sparse signal/image which cannot be reconstructed by $\ell_1$-minimization for a fixed system matrix. Based on the polytope theory, the algorithm provides a geometric interpretation of the recovery condition considering the seminal work by Donoho. The paper presents an additional condition, extending the Fuchs/Tropp results, in order to deal with noisy measurements. Simulations are conducted for tomography-like imaging system in which the design of the system matrix is a difficult task consisting of the selection of the number of views according to the sparsity degree.

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Field Value
Source EUSIPCO 2012
Author Pustelnik, Nelly, Dossal, Charles, H, Turcu, Flavius, Berthoumieu, Yannick, Ricoux, Philippe
Maintainer CCSD
Last Updated May 10, 2026, 23:56 (UTC)
Created May 10, 2026, 23:56 (UTC)
Identifier hal-00826821
Language en
Rights https://about.hal.science/hal-authorisation-v1/
contributor Laboratoire de Physique de l'ENS Lyon (Phys-ENS) ; École normale supérieure de Lyon (ENS de Lyon) ; Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL) ; Université de Lyon-Centre National de la Recherche Scientifique (CNRS)
creator Pustelnik, Nelly
date 2012-08-27T00:00:00
harvest_object_id 8e9b1a26-3c14-403c-9189-d37d9eaf7d9e
harvest_source_id 3374d638-d20b-4672-ba96-a23232d55657
harvest_source_title test moissonnage SELUNE
metadata_modified 2025-10-13T00:00:00
set_spec type:ART