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Finding the mean of a set of images [message #32589]

Tue, 22 October 2002 01:45

David Oesch
Messages: 31
Registered: October 2000

Member

Hello outthere,

I know this topic was up before, but all I could find in the list was to
go for CALL_EXTERNAL and use a FORTRAN etc. program. Here's my problem:
Does anyone have an algorithm for finding the mean/standardeviation etc
at each pixel position for a set of equal size 2-D images? Currently the
only way I have to do this is to extract all the values for a given
pixel position into a 1-D array and find the mean/standardeviation etc
on that. Doing it pixel by pixel like this is inefficient in IDL so I am
looking for an *array* based algorithm that would find all
the mean/standardeviation etc in parallel.
Any progs so far in IDL for this problem?..or a decent fortran or C program?

Cheers...

Dave

--
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David Oesch - Remote Sensing Research Group

Department of Geography

University of Bern Tel : +41 (0)31 631 8020
Hallerstr. 12 Fax : +49 (0)89 2443 43780
CH - 3012 Bern Mail: David.Oesch@giub.unibe.ch
Switzerland http://www.giub.unibe.ch/remsen

Remote Sensing is...
Staying as far away from the problem as possible.
- G. Archer, World Bank
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[Message index]

		Finding the mean of a set of images By: David Oesch on Tue, 22 October 2002 01:45
		Re: Finding the mean of a set of images By: David Oesch on Mon, 28 October 2002 02:06
		Re: Finding the mean of a set of images By: mfeldt on Mon, 28 October 2002 01:06
		Re: Finding the mean of a set of images By: R.Bauer on Wed, 23 October 2002 09:54

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