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Re: retaining ROI when rescaling? [message #60273 is a reply to message #60272]

Thu, 08 May 2008 14:38

Jean H.
Messages: 472
Registered: July 2006

Senior Member

Spon wrote:
> On May 7, 8:38 pm, Dave L <dave.le...@gmail.com> 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

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[Message index]

		Re: retaining ROI when rescaling? By: David Fanning on Thu, 08 May 2008 14:58
		Re: retaining ROI when rescaling? By: pgrigis on Thu, 08 May 2008 14:54
		Re: retaining ROI when rescaling? By: Jean H. on Thu, 08 May 2008 14:38
		Re: retaining ROI when rescaling? By: Spon on Thu, 08 May 2008 03:22
		Re: retaining ROI when rescaling? By: David Fanning on Wed, 07 May 2008 12:49

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