A 3D Finite-Difference BiCG Iterative Solver with the Fourier-Jacobi Preconditioner for the Anisotropic EIT/EEG Forward Problem
Figure 5
Efficiency of different preconditioners for the piecewise heterogeneous anisotropic spherical model (see Figure 3). Number of iterations (a) and runtime in seconds (b) versus a mixed derivative approximation type ((6a)–(6e)) for different resolutions (). Approximation C is outperformed by others.
