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Re: Two-dimensional fft
From: |
jeff millar |
Subject: |
Re: Two-dimensional fft |
Date: |
Thu, 12 Dec 2002 23:44:06 -0500 |
If you mask the results of a 2d FFT and then ifft it, it creates an image
filter, such as blurring or edge enhancement.
Is that the kind of thing you asking?
jeff
----- Original Message -----
From: "Richard Morey" <address@hidden>
To: "octave-help" <address@hidden>
Sent: Thursday, December 12, 2002 11:28 PM
Subject: Two-dimensional fft
> How does one interpret the output from a two-dimensional fft? I
> understand the interpretation of the one-dimensional fft and fftshift,
> but how does one interpret the matrix of values from a two-dimensional
> fft?
>
> Thanks.
>
> Richard
>
> --
> Richard Morey
> Graduate Research Assistant, Cognition and Neuroscience
> University of Missouri-Columbia
>
>
>
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Octave is freely available under the terms of the GNU GPL.
Octave's home on the web: http://www.octave.org
How to fund new projects: http://www.octave.org/funding.html
Subscription information: http://www.octave.org/archive.html
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