此源代码用以实现二维离散小波变变换，一种基于mallat塔式算法 -This source code is used to achieve the two-dimensional discrete wavelet transform to transform a pyramid algorithm based mallat

实现一维小波变换，Mallat算法，可实现，可理解，好用，好用，强烈推荐(Implement a one-dimensional wavelet transform, Mallat algorithm, which can realize, can understand and use, to use, highly recommended)