[Insight-users] Resampling segmentation

[Marius Erdt]

Hi Dan,

Unfortunately I've only got the segmentation of the original anisotropic 
MRI data set.
But I will try NN-interpolation and look if the result is sufficient.

Thanks a lot,
Marius

Dan Mueller wrote:
> 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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>>
>>     
>
>