Modified Gabor Wigner Transform for Crisp Time Frequency Representation

机译：改进的Gabor Wigner变换用于酥脆的时频表示

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摘要

Gabor Wigner transform (GWT) avoids the cross terms and gives high clarity in time frequency (t-f) domain.The transform is however unable to provide a clear picture in situations when auto and cross components of Wigner transform of the multi component signal overlap. This paper presents a new simple hybrid approach that overcomes the limitations of GWT in an efficient manner by making use of fractional Fourier transform and image processing technique.Experimental results demonstrate superiority of proposed scheme.

机译：Gabor Wigner变换（GWT）避免了交叉项，并在时频（t-f）域中提供了很高的清晰度，但是在多分量信号的Wigner变换的自动分量和交叉分量重叠的情况下，该变换无法提供清晰的图像。本文提出了一种新的简单混合方法，它利用分数阶傅里叶变换和图像处理技术有效地克服了GWT的局限性。实验结果证明了该方案的优越性。

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来源
《Signal Acquisition and Processing, 2009. ICSAP 2009》|2009年|119-122|共4页
会议地点 Kuala Lumpur(MY);Kuala Lumpur(MY)
作者
Khan N.A.; Jaffri M.N.; Shah S.I.;
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Dept. of Electr. Eng., Fed. Urdu Univ., Islamabad, Pakistan;

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关键词
Fourier transforms; Gabor filters; Wigner distribution; image segmentation; crisp time frequency representation; fractional Fourier transform; image processing; modified Gabor Wigner transform; multicomponent signal overlap; Gabor Transform; Gabor Wigner transform; Wigner Transform;

机译：傅里叶变换; Gabor滤波器; Wigner分布;图像分割;清晰的时频表示;分数阶Fourier变换;图像处理;改进的Gabor Wigner变换;多分量信号重叠; Gabor变换; Gabor Wigner变换; Wigner变换;

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3. High-resolution time-frequency analysis of an acoustic signal backscattered by a cylindrical shell using a modified Wigner-Ville representation [J] . Measurement Science & Technology . 2003,第7期

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4. Modified Gabor Wigner Transform For Crisp Time Frequency Representation [C] . Nabeel Ali Khan, M Noman Jaffri, Syed Ismail Shah International Conference on Signal Acquisition and Processing . 2009

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5. A STUDY OF WINDOWS FOR THE SHORT-TIME FOURIER TRANSFORM (WIGNER, TIME, FREQUENCY, MATCHED). [D] . JONES, DOUGLAS LLEWELLYN. 1986

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7. Time-Frequency Analysis using Time-Order Representation and Wigner Distribution [O] . Ram Bilas Pachori, Pradip Sircar 2008

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Modified Gabor Wigner Transform for Crisp Time Frequency Representation

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