Biomedical Engineering Reference
In-Depth Information
(a)
(b)
(c)
(d)
(e)
(f)
Figure 8.
(a) Result for steps (1)-(4) with Gaussian Diffusion. (b) Cross-sections of (a)
for slice 40. (c) Cross-section of final solution for slice 40. (d) Result for steps (1)-(4)
with Anisotropic Diffusion. (e) Cross-sections of (d) for slice 40. (f) Cross-section of final
solution when using anisotropic diffusion (slice 40).
The T-Surface parameters used are:
c
=0
.
65,
k
=1
.
32, and
γ
=0
.
01. The
grid resolution is 5
×
5
×
5, the freezing point is set to 15, and the threshold
T
∈
(120
,
134) in Eq. (4). The number of deformation steps for T-Surfaces was 17. The
model evolution can be visualized at http://virtual01.lncc.br/˜rodrigo/links/tese/
elipse.html.
6.2. User Interaction
We will now demonstrate the potential of the user interaction procedure to
force merges.
In this example, we have three spheres of intensity 50 placed in a 150
×
150
×
150 image volume. The spheres were previously extracted by the proposed method
