[Insight-users] Resampling segmentation

[Dan Mueller]

Hi Marius,

You might want to try setting the the ResampleImageFilter Interpolator
to a NearestNeighborInterpolateImageFunction:
    http://www.itk.org/Insight/Doxygen/html/classitk_1_1NearestNeighborInterpolateImageFunction.html

This will keep the resampled output as a binary image.

Is it possible to do the binary segmentation on the resampled MRI
data? This would be the ideal option in terms of quality...

HTH

Cheers, Dan

2008/5/15 Marius Erdt <marius.erdt at gmx.de>:
> Hi,
>
> is there a way in ITK to resample not only greyvalue volumes but binary
> volumes?
>
> I've got a binary segmentation that was created from an anisotropic MRI data
> set. Resampling the MRI data to isotropic voxels is not a problem (using ITK
> resampleImageFilter). However resampling the binary volume using
> interpolation produces a non-binary output. I could threshold the result,
> but that would not be a proper result in terms of linear interpolation
> between slices.
>
> Does anyone have an idea how to resample a binary volume such that the
> result is equivalent to a linear interpolation between the segmentations of
> the slices.
>
> Thanks for any help,
>
> Marius
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