摘要
分析了对偶树复小波变换的相关原理,利用Q-移位的思想从构造小波的充要条件出发,给出了互为Hilbert变换对的复小波的代数构造方法。该方法避免了进行谱分解,且具体给出了支集长度为3的小波所对应的滤波器。
This paper analyzes the dual tree complex wavelet transform of the relevant principles.A method for design Hilbert transform pairs of wavelet algebra constructed was proposed from the necessary and sufficient conditions for constructing wavelet.It avoids performing spectral factorization,and gives the supported set of length 3 corresponding to the wavelet filter.
出处
《云南师范大学学报(自然科学版)》
2011年第1期4-8,共5页
Journal of Yunnan Normal University:Natural Sciences Edition
基金
国家自然科学基金资助项目(10571113)
关键词
Hilbert变换对
解析复小波
Q-移位正交滤波器
线性相位
dual-tree complex wavelet transform
Hilbert transform pairs
Q-shift orthogonal filter
Complex analytical wavelet