[Insight-users] using deformable registration between two different subjects

[John Drozd]

Sorry, my oversight. The parameters file was for
DeformableRegistration1.cxx.
The parameters file just happened to be listed in the ITK Software Guide
directly after the code listing for DeformableRegistration8.cxx, and that's
why I thought a parameter file was needed for DeformableRegistration8.cxx.
Looking at the code for DeformableRegistration8.cxx, I see that only a
fixedImageFile, movingImageFile and outputImageFile are required.

Thanks,
john

On Thu, Oct 8, 2009 at 3:14 PM, John Drozd <john.drozd at gmail.com> wrote:

> Hello,
>
> I have two brain volumes, that I successfully loaded into ITK from two
> different sets of dicom series, namely,
>
> image 1 data: (header info that I obtained when I saved my first volume as
> a nrrd file in Slicer)
> type: short
> dimension: 3
> space: left-posterior-superior
> sizes: 256 256 124
> space directions: (0,0.9375,0) (0,0,-0.9375) (-1.3,0,0)
> kinds: domain domain domain
> endian: little
> encoding: gzip
> space origin: (-79.9,-125.9,121.8)
>
> image 2 data: (header info that I obtained when I saved my second volume as
> a nrrd file in Slicer)
> type: unsigned short
> dimension: 3
> space: left-posterior-superior
> sizes: 256 256 166
> space directions: (0,0,-0.93905) (0,0.93905,0) (1.2024,0,0)
> kinds: domain domain domain
> endian: little
> encoding: gzip
> space origin: (198.396,-0,-0)
>
> I want to use a deformable registration such that I will deform the first
> image into the the second image.  Because the images will have different
> modalities, I am planning to use a modified version of either
> DeformableRegistration8.cxx (which uses itk::BSplineDeformableTransform,
> itk::MattesMutualInformationImageToImageMetric with the LBFGSB Optimizer).
> I may also try using DeformableRegistration14.cxx which uses a
> gradientsteepestdescent optimizer. As a final refinement, maybe a
> multiresolution scheme of these routines to speed up the computation.
>
> I noticed that in the parameter file for DeformableRegistration8.cxx, only
> one size Nx, Ny, Nz is specified for both images, but my images have
> different sizes and different space directions, and different space origins
> as listed in the nrrd headers above for these images.
>
> I will try on my own, but I was wondering if someone has some helpful
> insight or hints as to whether there are many modifications that I have to
> do, to refine DeformableRegistration8.cxx or DeformableRegistration14.cxx
> and their associated classes to make this workable for my situation.
>
> Any suggestions are welcome.
>
> Thank you.
>
> john
>
> --
> John Drozd
> Postdoctoral Fellow
> Imaging Research Laboratories
> Robarts Research Institute
> Room 1256
> 100 Perth Drive
> London, Ontario, Canada
> N6A 5K8
> (519) 661-2111 ext. 25306
>



-- 
John Drozd
Postdoctoral Fellow
Imaging Research Laboratories
Robarts Research Institute
Room 1256
100 Perth Drive
London, Ontario, Canada
N6A 5K8
(519) 661-2111 ext. 25306
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