Lifting scheme of symmetric tight wavelets frames

被引：0
|
作者：
ZHUANG BoJin
机构：
来源：
Science China(Information Sciences) | 2008年 / 08期
基金：
中国国家自然科学基金;
关键词：
lifting scheme; tight frame; wavelet transform;
D O I：
暂无
中图分类号：
TN911 [通信理论];
学科分类号：
081002 ;
摘要：
This paper proposes a method to realize the lifting scheme of tight frame wavelet filters.As for 4-channel tight frame wavelet filter,the tight frame transforms’ ma-trix is 2×4,but the lifting scheme transforms’ matrix must be 4×4.And in the case of 3-channel tight frame wavelet filter,the transforms’ matrix is 2×3,but the lifting scheme transforms’ matrix must be 3×3.In order to solve this problem,we intro-duce two concepts:transferred polyphase matrix for 4-channel filters and trans-ferred unitary matrix for 3-channel filters.The transferred polyphase matrix is sym-metric/antisymmetric.Thus,we use this advantage to realize the lifting scheme.
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页码：1117 / 1124
页数：8
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