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. 2015 Jul 14;35(4):1056–1076. doi: 10.1148/rg.2015140232

Figure 7c.

Figure 7c

Diagrams of the general idea of region-based segmentation: Region-based segmentation approaches start with a seed point and then grow as they add neighboring pixels or voxels to the evolving annotation as long as the neighborhood criterion is satisfied. (a) Start of growing a region shows initial seed point (black circle) and directions of growth (arrows). (b) Growing process after a few iterations shows area grown so far (black area), current voxels being tested (gray circles), and potential directions of further growth (arrows). (c) Final segmentation (black area).