基于多分辨小波变换的相位匹配

相位匹配是基于频域匹配方法的一种,它利用具有局域频率特征的相位信号作为匹配基元,其匹配过程具有由粗到精的多分辨率特性。通过实信号解析分析法,在选用双正交小波的基础上,利用 Hilbert 交换构造了适于相位信号提取的频带分解滤波器,利用多分辨率小波变换将多分辨率的匹配过程与多分辨率的相位信号提取过程有机地结合起来。

Phase Matching Based on Multiresolution Wavelet Transform

Phase matching,which is done in frequency domain,exploits phase in frequency domain as matching primitives.The matching approaches are done from coarse to fine and this makes the approach to be a multiresolution progress.The biorthogonal wavelet and Hilbert transform are used to construct a band split filter based on the constructing of analytical signal.This makes multiresolution matching approaches combined well with the approaches of extracting of phase by using multiresolution wavelet transform.