多进制小波及其在DEM数据有损压缩中的应用

Application of multi band wavelet on simplifying DEM with lose of feature information

多进制小波是近几年刚发展的小波理论的一个新的分支，本文阐述了多进制小波分析的基本方法及其较之于二进制小波的若干优点，提出利用多进制小波变换压缩（简化）ＤＥＭ数据的方法，并给出实验结果。

Multi band wavelet is a new branch of developing wavelet theory in recent years.This article focuses on the basic methods of multi band wavelet analysis and its merits compared with binary band wavelet. A technique for compressing and simplifying DEM with multi band wavelet is provided, and the experiment proves an ideal result.