摘要
小波变换是傅里叶变换的改进,在工程领域中得到了广泛应用。本文主要结合MATLAB介绍小波变换的计算机实现,包括三种类型的小波变换。文中首先介绍了连续小波变换的数值积分实现,接着介绍了多分辨率分析和Mallat算法,最后用滤波器组实现了离散网格上的小波变换和离散序列的小波变换。
Wavelet transform is the improvement of Fourier transf or m,which has been widely used in engineering fields.This paper mainly introduces implementation of wavelet transform on computer with MATLAB,including three type s of wavelet transforms.First,it introduces the implementation of continuous wav elet transform with numerical integration.Then it introduces Multiresolution Ana lysis and Mallat's algorithm.At last,with filter banks,it implements wavelet tr ansform on discrete grids and discrete sequence wavelet transform.
出处
《计算机应用与软件》
CSCD
北大核心
2005年第5期8-10,70,共4页
Computer Applications and Software
基金
国家自然科学基金项目(60275023)资助
