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Communication dans un congrès

Recovery guarantees for mixed norm l-(p1, p2) block sparse representations

Fardin Afdideh 1, * Ronald Phlypo 1 Christian Jutten 1
* Auteur correspondant
1 GIPSA-VIBS - GIPSA - Vision and Brain Signal Processing
GIPSA-DIS - Département Images et Signal
Abstract : In this work, we propose theoretical and algorithmic-independent recovery conditions which guarantee the uniqueness of block sparse recovery in general dictionaries through a general mixed norm optimization problem. These conditions are derived using the proposed block uncertainty principles and block null space property, based on some newly defined characterizations of block spark, and (p, p)-block mutual incoherence. We show that there is improvement in the recovery condition when exploiting the block structure of the representation. In addition, the proposed recovery condition extends the similar results for block sparse setting by generalizing the criterion for determining the active blocks, generalizing the block sparse recovery condition, and relaxing some constraints on blocks such as linear independency of the columns.
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Communication dans un congrès
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https://hal.univ-grenoble-alpes.fr/hal-01658328
Contributeur : Ronald Phlypo <>
Soumis le : jeudi 7 décembre 2017 - 15:16:33
Dernière modification le : mercredi 7 octobre 2020 - 11:36:12

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Fardin Afdideh, Ronald Phlypo, Christian Jutten. Recovery guarantees for mixed norm l-(p1, p2) block sparse representations. 24th European Signal Processing Conference (EUSIPCO 2016), Aug 2016, Budapest, Hungary. ⟨10.1109/EUSIPCO.2016.7760274⟩. ⟨hal-01658328⟩

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