Re: image degradation
From: Armin Doerry (adoerry_at_yahoo.com)
Date: 11/20/04
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Date: Fri, 19 Nov 2004 19:43:59 -0700
Often it depends on the nature of the degradation... in other words, there
are multiple measures...
1) blurring due to misfocus can often be measured via spreading of the
point-spread function (impulse response)...
2) other improper focussing can at times be measured by some integrated
sidelobe measure...
3) noise can be measured via some mean-squared error calculation...
4) if the degradation is of a geometric distortion nature, then an RMS
pixel accuracy measure might be appropriate...
5) if the degradation is of a dynamic range issue, then a dynamic range
measure may be appropriate...
-- Armin Doerry adoerry@yahoo.com ================== "Flipdog" <john.lai@worldnet.att.net> wrote in message news:39xnd.938139$Gx4.279174@bgtnsc04-news.ops.worldnet.att.net... > Hello all, > If I am given two images. One of which is the original and the other one > has some degradation in it. Can someone be kind enough to tell me what are > the methods to measure the amount of degradation between these two images? > I just want to have some leads so that I can start to search in the right > direction. > Thanks in advance. > FD > >
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