Hybrid Multilevel Sparse Reconstruction for a Whole Domain Bioluminescence Tomography Using Adaptive Finite Element

Figure 3

Evolution of reconstruction results with the local refined mesh in the single-source case. The green mesh denotes the local region that consists of nonzero nodes of the solution; the black mesh is the discretized source. (a) to (d) corresponds to four mesh levels, that is, Θ₁ to Θ₄.

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