| 基于小波和傅立叶变换的纱线波谱图计算 |
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| 引用本文： | 邓启友,马俊,李秀花.基于小波和傅立叶变换的纱线波谱图计算[J].武汉科技学院学报,2012(3):86-88. |
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| 作者姓名： | 邓启友 马俊 李秀花 |
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| 作者单位： | 1. 武汉纺织大学数学与计算机学院,湖北武汉,430073
2. 华中科技大学图像所,湖北武汉,430074 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 采用离散小波变换与快速傅立叶变换相结合的方法,先对纱线信号进行小波分解,再对各子带信号作快速傅立叶变换,从而得到各子带信号的频谱。截取相应频段,并在同一图形上显示,然后将各频率成分转换成相应的各波长分量,得到纱线波谱图。
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| 关 键 词： | 傅立叶 小波变换 纱线 波谱图 |
The Calculation for Spectrum of Yarn Based on Wavelet Transform and Fourier Transform |
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| DENG Qi-you,MA Jun,LI Xiu-hua.The Calculation for Spectrum of Yarn Based on Wavelet Transform and Fourier Transform[J].Journal of Wuhan Institute of Science and Technology,2012(3):86-88. |
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| Authors: | DENG Qi-you MA Jun LI Xiu-hua |
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| Institution: | 1 School of Mathematics & Computer science,Wuhan Textile university,Wuhan Hubei 430073,China; 2 Institute for Pattern Recognition &Artificial Intelligence,Huazhong University of Science and Technology,Wuhan Hubei 430074,China) |
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| Abstract: | This paper adopts the combination of discrete wavelet transform and FFT method,firstly the signal of yarn is decomposed using wavelet,then each of the sub-band signal is transformed into the spectrum using FFT.We intercept the corresponding frequency band,and display their spectrum on the same graph.After converting the corresponding frequency components into wavelength component,we can get the yarn spectrogram. |
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| Keywords: | FFT Wavelet Transform Yarn Spectrogram |
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