Table 4.
Parameter values; x, y, z denote coordinate directions horizontal, axial and lateral (between B-scans).
| Symbol | Explanation | Value |
|---|---|---|
| ν | weight parameter of balloon force | 0.03248 |
| ω | local energy weight | 0.15915 |
| 1 − ω | global energy weight | |
| c 1 | global fitting gray value in Ω1 | 0.24206 |
| c 2 | global fitting gray value in Ω2 | 0.94945 |
|
| ||
| µx = 0.035 | ||
| µ | weight parameter of curvature | µy = 0.010 |
| µz = 0.035 | ||
| τ | time step | 0.0015 |
| n | number of iterations (time steps) | 140 |
| λ 1 | tissue area weight | 1 |
| λ 2 | vitreous body area weight | 1 |
| ε | half of narrow band width | 5 |
| ρ | boundary potential value | 25 |
| σx = 2 | ||
| σ | local energy convolution kernel size | σy = 0 |
| σz = 2 | ||
| hx = 1 | ||
| h | spatial mesh size | hy = 3 |
| hz = 1 | ||