%压缩感知omp分块算法，使用小波变换，本程序实现图像LENA的压缩传感 % 算法采用正交匹配法，参考文献 Joel A. Tropp and Anna C. Gilbert % Signal Recovery From Random Measurements Via Orthogonal Matching % Pursuit，IEEE TRANSACTIONS ON INFORMATION THEORY, VOL. 53, NO. 12, % DECEMBER 2007.