Fig. 6

Shown here are accessibility-tagged contour trees (left), aEDTs (center), and aCRTs (right) for the cavity, seeded to show access from the left (top) and right (bottom) image boundaries. The accessibility-tagged contour tree is mapped back onto the volume in order to produce the aEDT. Whereas the EDT gives the maximum radius of a circle that could occupy each point without touching the biomass, an aEDT gives the maximum radius of a circle that could each each point by diffusing from a seed region. In each figure, the orange star indicates the seed region. The aCRT shows the maximum radius of a circle which could diffuse from the seed region and then overlap each point