[Insight-users] Extract a non-orthogonal 2D slice from a 3D image

[Luis Ibanez]

Hi Brandon,


Yes,

you can use the itkResampleImageFilter:
http://www.itk.org/Insight/Doxygen/html/classitk_1_1ResampleImageFilter.html

You can indicate the rotation of the new image grid
with respect to the original image grid with a
VersorRigid3DTransform.

Please read the ITK Software Guide

     http://www.itk.org/ItkSoftwareGuide.pdf

in particular, section: "6.9 Geometric Transformations"
in pdf-page 252.

If you want to extract a single slice, then define
the size of your output image as having size = 1 in
its third dimension.

You can chose the interpolator to use along with
the ResamapleImageFilter. The linear interpolator
is a common choice, but you have three other options:

http://www.itk.org/Insight/Doxygen/html/classitk_1_1InterpolateImageFunction.html 

http://www.itk.org/Insight/Doxygen/html/classitk_1_1BSplineInterpolateImageFunction.html


     Regards,


        Luis



-------------------
Brandon Lin wrote:
> Dear ITK experts,
>  
> The ExtractImageFilter can only extract a slice orthogonal to one of the 
> cartesian axis.  Is there a tool in ITK that allows me to extract a 
> non-orthogonal 2D slice from a 3D image?
>  
> Also, if I have a stack of 2D slices which are not exactly parallel to 
> each other, with all the relative positions and angles are given, is 
> there a tool that allows me to combine them into a 3D image using some 
> kind of interpolator? 
>  
>  
> Thanks,
> Brandon
> 
> 
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