% demo_l2_l1 - This demo illustrates the TwIST % algorithm in the l2-l1 optimization problem % % xe = arg min 0.5*||A x-y||^2 + tau ||x||_1 % x % % where A is a generic matrix and ||.||_1 is the l1 norm. % After obtaining the solution we implement a debias phase % % For further details about the TwIST algorithm, see the paper: % % J. Bioucas-Dias and M. Figueiredo, "A New TwIST: Two-Step % Iterative Shrinkage/Thresholding Algorithms for Image % Restoration", IEEE Transactions on Image processing, 2007. % %% % Please check for the latest version of the code and papers at % www.lx.it.pt/~bioucas/TwIST % % Authors: Jose Bioucas-Dias and Mario Figueiredo, % Instituto Superior T閏nico, October, 2007