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Article #414

2d dft phase info

#414
From: Susan Margulies
Date: Tue, 01 Sep 1992 19:50
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In recent posts I have seen some discussion about the phase
information which results from a two-dimensional discrete Fourier
Transform.  I am new to 2D Signal and Image Processing, and as such
have my own question to throw into the discussion.

Basically, I am trying to come up with a way of visualizing the
phase information as a function of position.  I am already
displaying the magnitude information by mapping transform
coefficients into grey scale information.  But since it is the phase
information which is necessary (and sufficient) for image
reconstruction, I would prefer to be studying the phase information.
(I am doing graduate thesis research on image compression.)

Any suggestions would be greatly appreciated, even if the advice is
to look at the phase information separately in each dimension!

Thanks,
Susan

--
Susan E. Margulies       
HP Imaging Systems       
508-681-2153 (work)      
susanm@hp-and.an.hp.com  
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From: susanm@hp-and.an.hp.com (Susan Margulies)
Newsgroups: sci.image.processing
Subject: 2d dft phase info
Date: 1 Sep 1992 14:50:40 -0500
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