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Author Topic: [REQ] Matlab help  (Read 984 times)
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fire
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« on: July 17, 2010, 02:20:48 14:20 »


 Can anybody give me  the Matlab program for 'the frational Fourier Transform of a Image'

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blue_17
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« Reply #1 on: July 18, 2010, 12:46:31 00:46 »

http://en.wikipedia.org/wiki/Fractional_Fourier_transform

http://en.wikipedia.org/wiki/File:FracFT_Rec_by_stevencys.jpg

Not in Matlab but is mathematic model  

Regards from Poland:)
« Last Edit: July 18, 2010, 12:53:56 00:53 by blue_17 » Logged
2N5109
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« Reply #2 on: July 29, 2010, 04:30:55 04:30 »

I have not studied fractional Fourier Transforms but it looks like the concept may help other types of processing.  It looks intriguing. 

I found this file (fpft.m) at: 

http://www.mathworks.cn/matlabcentral/fileexchange/9200-partial-fast-fourier-transform?controller=file_infos&download=true

which also has a link to a descriptive .pdf file at: 

http://crd.lbl.gov/~dhbailey/dhbpapers/   (#16 and 17 or search "fractional fourier")

The paper explains the fractional FFT and applications.  The matlab script uses it in a fast partial FFT algorithm.  What is your application?    


73, 2N5109
« Last Edit: August 10, 2010, 03:49:27 03:49 by 2N5109 » Logged
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