NEW: function to denoize image with NLM of dipy
NEW: function to denoize image with NLM of dipy

Former-commit-id: 473d2fe4f8eefe7b7695a9767ff4e63fda3f4a3c [formerly 7f02f4105c6fdd64b8ad581531ee5a253108a5bc]
Former-commit-id: 4090810d577d7da1dc01ed736a84c3a8896f643f
Former-commit-id: bff4bc5288c9623f66634b6d731ad98826c4a226
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox