Figure 4.

Comparison of dIMMI- and CDMMI-based reconstructions using the LSQR reconstruction algorithm. (a) Both models have a tendency towards increasing absolute error as a function of image size, though (b) the relative residual for CDMMI is higher than dIMMI for low image resolutions, converging at higher resolutions. (c) Both models incur similar numbers of negative pixels in their reconstructions. These trends are reversed, however, when considering the reconstruction L₁ norm (d) and L₂ norm (e) for each model, with CDMMI outperforming dIMMI when reconstructing at low resolutions; again, both methods perform similarly at high resolutions. (f) depicts the ground truth, reconstructed, difference, and SSIM images for each of the methods. Both methods appear to perform similarly well, and the introduction of reconstruction artifacts as seen in the SSIM images affects both to comparable degrees. Figure created using a combination of MATLAB and Microsoft PowerPoint.