OPT : new landmark creation along centerline (fixed edges, and equidistant in between)
OPT : new landmark creation along centerline (fixed edges, and equidistant in between)


Former-commit-id: 9a9ee49c03aad8418c4008bca6fd5a224ea14bb5
Former-commit-id: 83731275ca9e583ff03bcc8cc84b762fb022b9d9
3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox