REF: label_vertebrae: updated to laplacian
REF: label_vertebrae: updated to laplacian

Former-commit-id: 1caca06578d5d129832412ff444dac38a6717748 [formerly 1c976a5aa77387676887b9c3d319e29c87b94aad]
Former-commit-id: 3fe20b9df401d17fb6aa3d47fa658faa1c69eefb
Former-commit-id: a1137bd1856529340dd46142553ef7686393593d
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox