REF: cleaner interpolation options
REF: cleaner interpolation options

Former-commit-id: 7429bdc42fbec79131e8a49fe2e51e6fa5905fc2 [formerly 0431e76e4080927b3f8c663c378b46f6625e9ebf]
Former-commit-id: 39bf8376ac4d84a1e72c823bb2c37b17f25b59b2
Former-commit-id: 03e176d4e32b3636d68606fb9ccc0b9d1bf8b401
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox