[ITK-users] adding two images with different origin

[Andras Lasso]

You need to resample the volume if you want to actually change the image pixels and not just modify the image header. You can use one of the resample modules in Slicer for this, see detailed explanation on these pages:
http://www.slicer.org/slicerWiki/index.php/Documentation/Nightly/Modules/Resampling
http://www.slicer.org/slicerWiki/index.php/Documentation/Nightly/FAQ#Apply.2C_Resample.2C_Export
http://www.slicer.org/slicerWiki/index.php/Registration:Resampling

Andras

From: Community [mailto:community-bounces at itk.org] On Behalf Of Hammond, Emily M
Sent: Wednesday, July 15, 2015 10:28 AM
To: Johnson, Hans J <hans-johnson at uiowa.edu>
Cc: insight users <insight-users at itk.org>
Subject: Re: [ITK] [ITK-users] adding two images with different origin

Using the slicer transforms module.
________________________________
From: Johnson, Hans J
Sent: Wednesday, July 15, 2015 9:12 AM
To: Hammond, Emily M
Cc: insight users
Subject: Re: [ITK-users] adding two images with different origin
Emily,

How did you translate it?  If you want to stop by my office (4316 SC) I could help you out in person.

Hans

========================================================================
Hans J. Johnson, Ph.D.,  Associate Professor
Electrical and Computer Engineering (Primary), Biomedical Engineering, Psychiatry
hans-johnson at uiowa.edu<mailto:hans-johnson at uiowa.edu>
(319) 621 7185 (cell)
(319) 384 3538  ECE Phone (Primary)
(319) 353 8587 Psychiatry Phone (Secondary)

4316 Seamans Center
Iowa City, IA 52242

On Jul 15, 2015, at 9:07 AM, Hammond, Emily M <emily-hammond at uiowa.edu<mailto:emily-hammond at uiowa.edu>> wrote:

Hello all,

I am trying to compute the measures identified in itkLabelOverlapMeasureFilter with a couple label masks. I have created a test volume and translated it to create a couple more test volumes to get a calculable overlap for verification. Unfortunately, this translation changes the origin of the these images.

How can I perform these measures on two images that cover the same space, but do not have the same origin? If I just change the origins to match using ChangeImageInformationFilter then my translation is reversed.

Thanks
Emily Hammond
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