A COMPARISON AND EVALUATION OF MOTION INDEXING ...
A COMPARISON AND EVALUATION OF MOTION INDEXING ...
A COMPARISON AND EVALUATION OF MOTION INDEXING ...
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Figure 5.4: False negatives for PPCA technique.<br />
The experimental results for the second PCA-based technique, PPCA, are also<br />
not satisfactory. This technique also segments the data first and then performs in-<br />
dexing on these segments. The segment end points detected by the technique are<br />
accurate but it also creates a number of false segments. These small and false seg-<br />
ments are responsible for a large number of false positives (see Fig 5.5). On the other<br />
hand, the number of false negatives is reasonably low (see Fig 5.4).<br />
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