
362 Current Trends in Bayesian Methodology with Applications
Pre-Shape Space Shape Space
Example 3 Figure 17.8
Example 4 Figure 17.8
FIGURE 17.10
Principal direction of variation within ±1 standard deviation of the mean for
Examples 3 (top) and 4 (bottom) from Figure 17.8.
example have two peaks, but in different placements. Comparing the computed
average shapes (Ex ample 1, Figure 17.8), we notice that the average in the
pre-shape space s till has two peaks but they are smaller and wider than in
the orig inal data. This is due to misalignment of the s urfaces in their given
parameteriza tions. The shape space mean ha s the same structure as the given