Previous version of sct_segment_graymatter NOT using asman's method
Previous version of sct_segment_graymatter NOT using asman's method


Former-commit-id: 81c880f214f929808a335d8797c086a30c45898c
Former-commit-id: b682de5a2b677f7424d2892c222bac1c8dde4a62
3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox