OPT: save image to set orientation
OPT: save image to set orientation

Former-commit-id: 3803a7a9db53698daaa7d05da4b80b3cd4133a6d [formerly 95b005c0ae0af401cb9a4f4e3c1defc81b51d170]
Former-commit-id: 54a0a763a3a6c28b4f66f6ecbfc47c70327a9236
Former-commit-id: ef3d3464be633e66900b6d97c02a389dcc78fbd9
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox