Information Technology Reference
In-Depth Information
Discrepancy D
100
90
80
70
60
50
40
30
20
Our method
Carmona et al
Lowell et al
10
0
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Fig. 5. Accumulated discrepancy results for our segmentaation method versus
Carmona et al [1]and Lowell et al [6]
(d=0.76)
(d=0.88)
(d=0.92)
(d=1.04)
(d=1.58)
(d=2.06)
(d=2.19)
(d=3.57)
(d=6.54)
Fig. 6. Several examples of segmentation obtained with our method (solid line). The
gold standard is represented by dotted line.
occurs. We think that the explanation for the results obtained in the first dis-
crepancy subinterval
is that while our method approaches the solution
using a non deformable ellipse, the local deformation phase in Lowell's method
makes it possible to do a slight deformation of the ellipse, obtaining a better
approaches the experts' real trace. However, the change in trend on the second
subinterval
(0
,
1
.
4)
reveals the robustness of our method. In fact, while Lowell's
method only obtains 80% of images below a discrepancy
δ
(1
.
4
,
5)
=5
,ourmethod
obtains 95%.
Search WWH ::
Custom Search