Smoothing the mask edges

1

Hello MRtrix3 Community,

I have a very simple issue. Yet, could not find the real solution. I would like to smooth the edges of the mask. The mask was created from dwi2mask and then processed manually. Would you please suggest me?

Suren

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2

Hi Suren,

There are two possible ways to interpret “smoothing a mask”:

  • Smoothing in such a way that the result is no longer a binary mask, but contains values between 0.0 and 1.0. This is simply image smoothing; see mrfilter smooth.

  • Smoothing in such a way that the outer surface of the binary selection has less high-frequency features. This can be done with a combination of voxel2mesh, meshfilter smooth, mesh2voxel and mrthreshold -abs 0.5.

Rob

3

Hello @rsmith ,

Thank you very much. This is awesome. :smiley:

Suren