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新的四元数解析信号相位定义

DOI: 10.11834/jig.20060241

Keywords: 解析信号,四元数,经验模式分解(EMD),Gabor滤波器,纹理分析

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Abstract:

解析信号韵定义及瞬时频率、瞬时幅值的算法在信号处理的时频分析领域有着重要意义.四元数解析信号是1维解析信号的定义在2维上的合理延伸,但是现有的四元数解析信号的相位定义不适合分析2维信号的瞬时频率.为此根据四元数解析信号的自身特点提出了一种新颖的四元数解析信号相位定义,并应用两种2维信号分解工具验证了该定义的适用性.合成与自然纹理的试验结果表明,该相位定义更加符合信号的内在性质,更有利于对图像解析特征的提取与分类.

References

[1]  Leon Cohen.Time-Frequency Analysis:Theory and Applications[M].Upper Saddle River,NJ,USA:Prentice-Hall,1995.
[2]  Bülow Th,Sommer G.Hypercomplex signals-a novel extension of the analytic signal to the multidimensional case[J].IEEE Transactions on Signal Processing,2001,49 (11):2844 ~ 2852.
[3]  Havlicek J P,Harding D S,Bovik A C.The multicomponent AM-FM image representation[J].IEEE Transactions on Image Processing,1996,5(6):1094 ~ 1100.
[4]  Huang N E,Shen Z,Long S R,et al.The empirical mode decomposition and the Hilbert spectrum for nonlinear and nonstationary time series analysis[A].In:Proceedings of Royal Society[C],London,1998:903 ~995.
[5]  Brodatz P.Textures-A Photographic Album for Artists and Designers[DB].New York:Dover Publications.,1966.
[6]  Bülow Th.Hypercomplex Spectral Signal Representations for the Processing and Analysis of Images[D].Kiel,Germany:Christian Albrechts University,1999.
[7]  Bülow Th,Sommer G.Quaternionic Gabor filters for local structure classification[A].In:Proceedings of IEEE International Conference of Image Processing[C],Brisbane,Australia,1998:808 ~ 810.
[8]  Nunes J C,Bouaoune Y,Delechelle E,et al.Image analysis by bidimensional empirical mode decomposition[J].Image and Vision Computing,2003,21 (12):1019 ~ 1026.
[9]  Bovik A C,Clark Marianna.Multichannel texture analysis using localized spatial filters[J].IEEE Transactions on Pattern Analysis and Machine Intelligence,1990,12 (1):55 ~ 73.

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