203537.fig.002a
(a)
203537.fig.002b
(b)
203537.fig.002c
(c)
203537.fig.002d
(d)
203537.fig.002e
(e)
203537.fig.002f
(f)
203537.fig.002g
(g)
203537.fig.002h
(h)
Figure 2: Reconstruction results in single source case on different mesh level, where the actual source is drawn as a red sphere. (a)–(d) are the isosurface of the reconstructed density by regularization from initial level to the final level, respectively. (e)–(h) are the corresponding results by regularization method, with a threshold of 50% of the maximum value.