Fig. 3From: Non-convex block-sparse compressed sensing with coherent tight framesAn instance for recovering the signal, which can be expressed as a block 5-sparse vector in terms of Ψ for different recovery methods. The solid line with pentagram markers represent the original signal, and the dotted line represents the recovered signal. a ℓ2/ℓ0.5-analysis method. b ℓ2/ℓ1-analysis method. c ℓ0.5-analysis method. d ℓ1-analysis methodBack to article page