说明：  可用于恢复稀疏信号，图像处理/噪声处理/医学成像等应用中，是压缩感知重构算法中的分段弱正交匹配追踪算法
(It can be used to recover sparse signals, image processing / noise processing / medical imaging, and so on. It is a piecewise weak orthogonal matching pursuit algorithm in compressed sensing reconstruction algorithm)