Space-Dependent Sobolev Gradients as a Regularization for Inverse Radiative Transfer Problems

Figure 5

2D RTE-based optical tomography. 10 dB noise. Evolution of errors ((a), (b)) and ((c), (d)) for ((a), (c)) and ((b), (d)), with respect to iterations, for , , , and . Note that the case corresponds to the ordinary gradient. The algorithm stops at iteration when .

(a)

(b)

(c)

(d)