Digital Signal Processing Reference
In-Depth Information
→
Figure 4.23.
quality
Qualitative
Interpretation of
Q
(Eq.
4.31)
in
terms
of segmentation
→
moves the
Q
toward < 1,1 >. A high content, but low coverage result
corresponds to the result of tracking system that finds only a small part
of the object with high reliability. A low content, but a high coverage
result corresponds to a result from a system that can localize area of
the object, but cannot find the object within that area. The value of
Q
→
differentiates between bad results, good technique that could be further
improved, and possible subjective bias in the ground truth results. The
Q
is similar to the concept of false positives and negatives in identifica-
tion algorithms.
Our
Q
results of the coastguard and container sequence are shown
in Figure 4.24. In the coastguard sequence, we see that we capture the
large coastguard ship very well. In the ground truth segmentation, the
motorboat and its wake are considered one object. Although the mo-
tor boat region is segmented reasonably well and shown to be a quality
partial result, the segmentation of the motorboat wake is not especially
good. In the container sequence, we see that we can get an imprecise
→
→
Search WWH ::
Custom Search