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Sweep along dimension X
| 1: for all (y, z) in plane P perpendicular to X do |
| 2: x ← 0 |
| 3: while x < length of volume in X do |
| 4: d ← ∞ |
| 5: for all voxels v adjacent to voxel(x,y,z) do |
| 6: d ← min(d, dist(v, voxel(x,y,z)) |
| 7: end for |
| 8: voxel(x,y,z) ← d |
| 9: x ← x + 1 |
| 10: end while |
| 11: end for |
