Fig. 4.

Improved spatial coherence. (a) cortical sulci tend to have a relatively small triangle size in the pial surface. (b) the maximum likelihood-based inference often yields isolated regions (yellow). (c) a standard graph-cut technique is used to refine spatial coherence. From the observation of adaptive triangle size in the pial surface, neighborhood relationship is encoded by the edge length. (d) the resulting labels become more spatially coherent to the manual annotation.