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This is an old revision of the document!

So you can make spatial smoothing with FSL?

You can use:

$ fslmaths original.nii -kernel gauss 2.1233226 -fmean smoothed.nii

The gaussian kernel takes its argument as sigma in mm instead of the FWHM, but you can see how to convert between these two values here:

Basically, divide your FWHM (in mm) by 2.3548 to get sigma.

neuroimagen/fsl_smooth.1445597286.txt.gz · Last modified: 2020/08/04 10:45 (external edit)