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66 Ch a p t e r Th r e e

Vertical
Resolution
0.8 mm/Pixel

Vertical
Resolution
0.2 mm/Pixel

FIGURE 3.7 Illustration of the interpolation effect.

Various methods are used for interpolating tomography images in medical sciences.
Methods such as Dynamic Elastic Interpolation (Lin et al., 1988), Shape-Based Interpo-
lation (Raya and Udupa, 1990), and Morphology-Based Interpolation (Guo et al., 1995)
are well accepted. Most of these methods involve complicated manipulations of images
or intensive computations. However, the most influential factor is still the spacing be-
tween adjacent sections where images are acquired. With this in mind, Wang et al.