[MINC-users] Blurring with noise and/or sharp edges

[Christopher Hammill]

I just read about Perona-Malik smoothing which supposedly honours edges.

https://people.eecs.berkeley.edu/~malik/papers/MP-aniso.pdf

It's implemented in ANTs using the iMath  PeronaMalik command.

Chris
________________________________________
From: minc-users-bounces at bic.mni.mcgill.ca [minc-users-bounces at bic.mni.mcgill.ca] on behalf of Gabriel A. Devenyi [gabriel.devenyi at mcgill.ca]
Sent: Monday, October 24, 2016 1:29 PM
To: MINC users mailing list
Subject: [MINC-users] Blurring with noise and/or sharp edges

Hi all,

I have some data I'd like to blur which has "nonsense" voxels outside the
brain (MP2RAGE maps). I want to exclude these voxels from the blur. If I
zero out these voxels I get an edge effect, the apodizing doesn't help as
much as I'd like it to.

Is anyone aware of an alternate blurring method which can avoid these
issues?

Thanks.

--
Gabriel A. Devenyi B.Eng. Ph.D.
Research Computing Associate
Computational Brain Anatomy Laboratory
Cerebral Imaging Center
Douglas Mental Health University Institute
McGill University
t: 514.761.6131x4781
e: gabriel.devenyi at mcgill.ca
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MINC-users at bic.mni.mcgill.ca
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