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Table 4 The convergence of Algorithm 3.1 with different σ

From: Novel forward–backward algorithms for optimization and applications to compressive sensing and image inpainting

Given: δ = 0.02, θ = 0.15, γ = 1.85, m = 80
γ N = 1024, M = 512 N = 2048, M = 1024
CPU Iter CPU Iter
0.1 13.2968 2228 26.7530 1765
1 14.3224 2069 39.0200 2177
10 19.6720 2428 54.4288 2624
100 21.7268 2261 49.6928 2165