Dictionary Preconditioning for Greedy Algorithms


This paper introduces the concept of sensing dictionaries. It presents an alteration of greedy algorithms like thresholding or (orthogonal) matching pursuit which improves their performance in finding sparse signal representations in redundant dictionaries while maintaining the same complexity. These algorithms can be split into a sensing and a… (More)
DOI: 10.1109/TSP.2007.911494


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