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Conference Papers Year : 2019

Region-based relaxations to accelerate greedy approaches


We propose a low-computational strategy for the efficient implementation of the "atom selection step" in sparse representation algorithms. The proposed procedure is based on simple tests enabling to identify subsets of atoms which cannot be selected. Our procedure applies on both discrete or continuous dictionaries. Experiments performed on the standard "Gaussian deconvolution" problem show the computational gain induced by the proposed approach.
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hal-02059649 , version 1 (06-03-2019)



Clément Dorffer, Cédric Herzet, Angélique Drémeau. Region-based relaxations to accelerate greedy approaches. 27th European Signal Processing Conference, EUSIPCO 2019, Sep 2019, La Corogne, Spain. ⟨10.23919/EUSIPCO.2019.8902669⟩. ⟨hal-02059649⟩
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