OPT: adaptation of the box size to the new pixel dimension (0.3x0.3)
OPT: adaptation of the box size to the new pixel dimension (0.3x0.3)

Former-commit-id: beed739f93f730fb9d50761c52b2b01d38695428 [formerly dbce319fcd51de52bade636506348cb1a705e767]
Former-commit-id: a744179a53b762bde67e89abdba0f837e7f3e74d
Former-commit-id: 1bf18f644190033800b4d41682d32a1345cc3647
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox