Signal and Image Recovery with Scale and Signed Permutation Invariant Sparsity-Promoting Functions

Jianqing Jia, Ashley Prater-Bennette, Lixin Shen

Sparse signal recovery has been a cornerstone of advancements in data processing and imaging. Recently, the squared ratio of ${\ell }_1$ to ${\ell }_2$ norms, $({\ell }_1/{\ell }_2{)}^2$, has be…