[ITK] [ITK-users] Demons Registration on a Region of Interest

[Dženan Zukić]

Have you tried extracting only the regions of interest using RoI
<http://www.itk.org/Doxygen/html/classitk_1_1RegionOfInterestImageFilter.html>
filter and registering these two smaller images? That is the usual
workaround if some filter does not respect requested region.

HTH

On Thu, Oct 29, 2015 at 9:49 AM, HONG NHUNG PHAM <
hong.nhung.pham at univ-poitiers.fr> wrote:

> Hello everyone,
>
> I want to apply Demons Registration to register two medical images, the
> image information is strong at the center, therefore I want to apply
> registration method on only the center region of the images. For example,
> take a center region of moving image, and find the corresponding positions
> of each pixel of the region in the fixed image. However, I can not find a
> method that allows processing on a region like that in
> itkDemonsRegistrationFilter.h. I tried passing the full fixed image as
> SetFixedImage, and only the center region of moving image as
> SetMovingImage. However, it crashes because it requires same size of fixed
> image and moving image.
>
> Does anyone have any idea of how to pass a region to demons registration
> filter?
>
> Thank you in advance!
>
>
>
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