203537.fig.003a
(a)
203537.fig.003b
(b)
203537.fig.003c
(c)
203537.fig.003d
(d)
203537.fig.003e
(e)
203537.fig.003f
(f)
Figure 3: Mesh evolution in the single source case and the regularized solutions on different mesh levels. The green mesh denotes the local region around the regularized solution in PSR; the black sphere is the actual source. (a), (b), and (c) are the reconstruction by 𝑙 1 regularization in the first, the second, and the last level, respectively. (d), (e) and (f) are the corresponding results by 𝑙 2 regularization.