[ITK-users] Multi label image interpolation

[Gouttard, Sylvain]

Hi,

I am working with a multiple label segmentation image which has at least 3 labels.
I would be interested in applying a transformation computed from a registration on this multiple label image.
Even though the transformation is fairly smoothed, when i use the nearest neighbor interpolation, the deformed image is pretty noisy mostly because of the interpolation type i think.

Would there be a solution (algorithm, itk filter, general method...) that would do an interpolation on a multiple label image while keeping the label numbers and performing better than nearest neighbor.
Ideally i would like something similar to the sinc interpolation in grey level images.

For example: when i have a region with label 3 close to a region with label 1, i want to make sure the deformed image will keep these labels 1 and 3 and won't do any average or interpolation creating new labels like label 2 for example.

Thanks for your help,
Sylvain


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