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Re: fourier transform [message #45079 is a reply to message #29028]

Mon, 01 August 2005 14:12

mperrin+news
Messages: 81
Registered: May 2001

Member

Pravs <praveshsubramanian@yahoo.com> wrote:
> Hi ,
>
> I am trying to convolute a huge gaussian kernel ([192,192]) with an
> image array ([512,512]). of course, if i had all the time on earth, i
> could use the convol routine.
> can someone tell me how do i get it done faster by using fourier
> transform?
> more specifically,
>
> smoothimage = raw convol image
>
> = something in terms of fourier transform

The easiest way may be to use the CONVOLVE routine from the
Goddard IDL astronomy library. You can download it from
http://idlastro.gsfc.nasa.gov.

- Marshall

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		Fourier transform, By: dinhnq on Wed, 30 January 2002 03:41
		Re: fourier transform By: mperrin+news on Mon, 01 August 2005 14:12

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