Article View: sci.image.processing
Article #416Re: 2d dft phase info
From: Patrick Moran
Date: Tue, 01 Sep 1992 20:55
Date: Tue, 01 Sep 1992 20:55
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In article <9209011949.AA19843@hp-and.an.hp.com>, susanm@hp-and.an.hp.com (Susan Margulies) writes: > 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. One possibility would be to map phase information to hue in the HSV color model. The magnitude could be mapped to value in the HSV model as well. The result could be displayed as an image. I haven't tried this myself, but I think the result could be interesting. Pat
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arc1-ca.pugleaf.net!sparky!uunet!wupost!zaphod.mps.ohio-state.edu!moe.ksu.ksu.edu!ux1.cso.uiuc.edu!news.cso.uiuc.edu!talon.ncsa.uiuc.edu!pmoranReferences:
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Newsgroups: sci.image.processing Path: arc1-ca.pugleaf.net!sparky!uunet!wupost!zaphod.mps.ohio-state.edu!moe.ksu.ksu.edu!ux1.cso.uiuc.edu!news.cso.uiuc.edu!talon.ncsa.uiuc.edu!pmoran From: pmoran@talon.ncsa.uiuc.edu (Patrick Moran) Subject: Re: 2d dft phase info References: <9209011949.AA19843@hp-and.an.hp.com> Message-ID: <Btx3G2.3s7@news.cso.uiuc.edu> Sender: usenet@news.cso.uiuc.edu (Net Noise owner) Reply-To: pmoran@ncsa.uiuc.edu Organization: NCSA Biomedical Imaging Group Distribution: na Date: Tue, 1 Sep 1992 20:55:12 GMT Lines: 22