Fourier Spectrum and Lowpass Filtering in Frequency Domain (a) Download Fig. 4.41(a) from the book web site and compute its (centered) Fourier spectrum. (b) Display the spectrum. (c) Implement the Gaussian lowpass filter in Eq. (4.8-7). You must be able to specify the size, M x N, of the resulting 2D function. In addition, you must be able to specify the location of the center of the Gaussian function. (d) Download Fig. 4.41(a) from the book web site and lowpass filter it to duplicate the results in Fig. 4.48.

Filename	Size	Update
傅里叶谱与频域低通滤波	0	2018-12-24
傅里叶谱与频域低通滤波\Fourier Spectrum	0	2018-12-24
傅里叶谱与频域低通滤波\Fourier Spectrum\fftcenter.m	235	2018-11-04
傅里叶谱与频域低通滤波\Fourier Spectrum\Fig4.41(a).tif	474102	2006-12-01
傅里叶谱与频域低通滤波\Fourier Spectrum\FourierSpectrum.m	2344	2018-11-04
傅里叶谱与频域低通滤波\Lowpassfiltering	0	2018-12-24
傅里叶谱与频域低通滤波\Lowpassfiltering\Fig4.41(a).tif	474102	2006-12-01
傅里叶谱与频域低通滤波\Lowpassfiltering\Lowpassfiltering.m	1148	2018-11-04

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