摘要
介绍了小波提升的基本原理和提升过程,根据双正交小波提升格式的特点,给出求解提升系数的解方程组方法.得出了常用的双正交小波变换的提升系数,然后利用这些小波进行整数小波变换.把他们和Mallat算法进行比较,速度大约快一倍.
The basic concept of lifting wavelet transform is presented with the instroduction of programs.According to the specialty of lifting scheme of the biorthogonal wavelet,we can solve the simultaneous equatins about the coefficients of lifting scheme.Then we use it to make out the integer wavelet transform by lifting scheme.Compared to mallat algorithm,the execution time of this algorithm is about 1 times faster.
出处
《应用数学》
CSCD
北大核心
2007年第S1期178-181,共4页
Mathematica Applicata
关键词
提升
图像压缩
双正交小波
Lift scheme
Image compress
Biorthogonal wavelet
