Fig. 10

CGLS + Sobolev reconstructions. Slices of reconstructions using the described CGLS + Sobolev algorithm, with Sobolev weights set to 0, 10, 100, from left to right. Below are magnified versions of a small region of the slices to more clearly see the effect on noise and features. The projection data consisted of 180 simulated noisy cone-beam projections of \(1024^2\) pixels, with a reconstruction volume of \(1024^3\) voxels