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Programming > Idl-pvware > Re: retaining R...
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Re: retaining ROI when rescaling?

by Jean H <jghasban@[EMAIL PROTECTED] > May 8, 2008 at 03:38 PM

Spon wrote:
> On May 7, 8:38 pm, Dave L <dave.le...@[EMAIL PROTECTED]
> wrote:
>> Hi,
>>
>> I have a 384X512 MRI image that I want to select an ROI in then
>> rescale it to overlay on a second MRI image measuring 110X110.  I
>> would then select the same ROI on the second image.  My question is
>> how can I retain the ROI selection when I rescale the image?
>>
>> Thanks,
>> Dave
> 
> For a quick-and-dirty result, I would use CONGRID. You may well want
> better interpolation though. I'm making a big assumption: that your
> second image is a distorted version of the first one (or a distorted
> image of the same field of view). If this isn't the case, it won't
> work.

if the two images does not cover the same area, you would have to 
transform your ROI coordinates to lat-long, and transform them back to 
image coordinates of your second image...

Jean




 6 Posts in Topic:
retaining ROI when rescaling?
Dave L <dave.lenar@[EM  2008-05-07 12:38:24 
Re: retaining ROI when rescaling?
David Fanning <news@[E  2008-05-07 13:49:23 
Re: retaining ROI when rescaling?
Spon <christoph.blau@[  2008-05-08 03:22:26 
Re: retaining ROI when rescaling?
Jean H <jghasban@[EMAI  2008-05-08 15:38:21 
Re: retaining ROI when rescaling?
pgrigis@[EMAIL PROTECTED]  2008-05-08 14:54:43 
Re: retaining ROI when rescaling?
David Fanning <news@[E  2008-05-08 15:58:43 

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tan12V112 Fri May 16 1:23:18 CDT 2008.