[Insight-users] Bilateral Filter units

[Mathew Guilfoyle]

Hi,

What the units are for the domain sigma argument to the
BilateralImageFilter?

Is it number of pixels/voxels or does it take into account the voxel
spacing?  e.g. if my image has 2x2x2mm voxels and I supply '3' for the
domain sigma is it 3 voxels (i.e. 6mm) or 3mm?

Thanks
Mat
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