OPT: changed back from nurds smoothing to touati's smoothing
OPT: changed back from nurds smoothing to touati's smoothing

Former-commit-id: e8824caaa816ddfe0f12a606e4b9f744cc9895b4 [formerly f3fea5a4223684e2bfda96340a3e3971436e3d0c]
Former-commit-id: 5bd5731ec193670ed0c46592a3ef55246d0c23f2
Former-commit-id: 19f477724bf44d1f242379c17b0b094aa952fff0
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox