Research Article

Sparse Regularization-Based Reconstruction for Bioluminescence Tomography Using a Multilevel Adaptive Finite Element Method

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.
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(a)
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(b)
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(c)
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(d)
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(e)
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(f)