Computational Vision and Medical Image Processing IV

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new bone, presumably because they are on an early

transition stage during the regeneration process

departing from stem cells. Table 6.2 confirms on its

last row that new bone is the more challenging class

on average for a correct classification (just 54%).

Among our three methods, the preliminary selec-

tion is the more reliable one, holding eight of the

ten tests which best qualify (in particular, those hav-

ing the ad hoc addition of A

0,0

). On the other hand,

PCA analysis produces five of the worst seven, and

finally, the (a-β)-k-feature set problem stays right in

between in positions 8 and 9 out of 17.

Regarding the importance of Legendre

moments, we can extract four main conclusions:

1. Using a large vector of Legendre moments does

not ...