| Re: Image subtraction [message #11659 is a reply to message #11635] |
Tue, 19 May 1998 00:00   |
FRANCOIS LAROSE
Messages: 2
Registered: May 1998
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Junior Member |
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Ok,
Let me explain, I take two gray scale images and subtract them togethers.
Then, I display the result on screen with TVSCL command. When I say, I get
poor
result, is because I compare the result of this subtraction with the
result
of a program that make image subtraction (NIH image). The two are very
different. So, I suppose I should do something else to get the same
result.
For the package, I working in research so I can't afford a expensive one.
Maybe, you can point me some web site...
Tanks
Frank
At 09:59 18/05/98 -0600, you wrote:
> you writes:
>
>> I need to do some image subtraction. With IDL, if I only do
>> Image1 - image2 and I get poor result. Does it have best code to
>> do image subtraction?
>
> Poor result how? Can't see it? Doesn't look like what
> you expect? Don't believe the results?
>
> Try this:
>
> TV, BytScl(image1 - image2, top=!D.N_Colors-1)
>
> Does that help?
>
>> PS If you know a good package of image analisys in IDL, just let me
know!
>
> How much would you be willing to pay for this? :-)
>
> David
>
> -----------------------------------------------------------
> David Fanning, Ph.D.
> Fanning Software Consulting
> E-Mail: davidf@dfanning.com
> Phone: 970-221-0438
> Coyote's Guide to IDL Programming: http://www.dfanning.com/
>
>
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