Segmentation of a ellipsoid with 3-D HMM. The figure shows 3 sections one
each in the X-Y, Y-Z, and X-Z planes. (a)-(c) is the
original image, (d)-(f) is the segmented image. The parameters are a =
35, b = 40, c = 30, and sigma = 0.6. The error rate is 6.5%.