Regularization of DT-MRI Using 3D Median Filtering Methods

Figure 2

Computing Fermat point 𝐹 (a) when one of the three angles is greater than 120^∘ and (b) when all the three angles are less than 120^∘. In the latter case, the Fermat point is the intersection of the two straight lines 𝐴₁𝐴^′₁ and 𝐴₃𝐴^′₃.

(a)

(b)