Fig. 4.

The robustness with regards to $\beta$. (a) conformance error ${\epsilon }_c$ of the probability method as a function of $\beta$, where the cropped interval of the ROI was $[-3,3]$. (b) distance error ${\epsilon }_d$ of hp-FEM as a function of $\beta$, where the PR was bounded in a box region $I_x\times I_y\times I_z=[-10,10]\times [-10,10]\times [-3,3]$.