[ITK] Smoothing under mask

[András, Osztroluczki]

Matt, and Bradly, thanks for your answers. Unfortunately the suggested
solutions are not good for me...:(
My mask basically the brain, without the skull. If I set the non-masked
pixels to 0, those 0-s still will be used during the smoothing --> the
boundary of the brain will be "darker". If i smooth the whole image and
then crop --> the boundary of the brain will be "lighter", because of the
high bone intensities. That's why i want that the computation only use the
masked values. Any suggestions for this particular problem ?

Regards,
Andras



2015-09-14 16:34 GMT+02:00 Bradley Lowekamp <blowekamp at mail.nih.gov>:

> Hello,
>
> Why is cropping the masked region from the smoothed not good?
>
> What do you expect he boundary condition around the mask to be? You could
> set the non-masked pixels to zero, and then run the smoothing on the whole
> image or a crop/ROI of the image?
>
> Brad
>
> On Sep 14, 2015, at 3:12 AM, András, Osztroluczki <
> andras.osztroluczki at gmail.com> wrote:
>
> Dear ITK users,
>
> Is there a way to perform smoothing (for example
> with: RecursiveGaussianImageFilter) under a masked region only (e.g.: the
> computation only use those pixel values which are marked by the mask).
> Smoothing the whole image and crop the masked region from the smoothed
> image is not good for me unfortunately.
>
> Thanks,
> Andras
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