Social Sparsity! Neighborhood Systems Enrich Structured Shrinkage Operators
Social Sparsity! Neighborhood Systems Enrich Structured Shrinkage Operators
Sparse and structured signal expansions on dictionaries can be obtained through explicit modeling in the coefficient domain. The originality of the present article lies in the construction and the study of generalized shrinkage operators, whose goal is to identify structured significance maps and give rise to structured thresholding. These generalize …