FFT's. Help with Region Segmentation

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#114

From: singlis
Date: Wed, 05 Aug 1992 23:13

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I am currently working on a problem to segment raster scanned topographic
maps, and one of the stages is texture segmentation.

There seems to be a couple of methods:
	
1) Histogram Window Signatures, compare normalised histograms in a small area
2) FFT based.

The question is: 

How do you calculate the FFT of a 2-D image? I assume you calculate the FFT
of the row/col of the element (pixel) you are working with.

BUT how do they display this as an intensity diagram? An FFT creates a freq.
breakdown, how do you display this as a single intensity???

Can anyone help with FFT's? Suggestions?

-Stuart Inglis

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Message-ID: <1992Aug6.111336.9896@waikato.ac.nz>

Path: arc1-ca.pugleaf.net!sparky!uunet!comp.vuw.ac.nz!waikato.ac.nz!singlis

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Path: arc1-ca.pugleaf.net!sparky!uunet!comp.vuw.ac.nz!waikato.ac.nz!singlis
From: singlis@waikato.ac.nz
Newsgroups: sci.image.processing
Subject: FFT's. Help with Region Segmentation
Message-ID: <1992Aug6.111336.9896@waikato.ac.nz>
Date: 6 Aug 92 11:13:36 +1200
Organization: University of Waikato, Hamilton, New Zealand
Lines: 19