Research Article

Digital Eversion of a Hollow Structure: An Application in Virtual Colonography

Figure 2

Cross-sections generated for a tubular structure with respect to its centerline. (a) Possible intersections of planar cross-sections perpendicular to the centerline, which may lead to redundant or little sampling of the surface, and (b) curved cross-sections based on an electrical field, in which positive charges are distributed along the centerline.
763028.fig.002a
(a)
763028.fig.002b
(b)