Figure 3From: Unconstrained image reconstruction with resolution modelling does not have a unique solution Noisy reconstructions and noise power spectrum. The images are OSEM reconstructions of a uniform disk from noisy projections ignoring the PSF (top row) and using a PSF model (bottom row). The plots show the corresponding noise power spectra for different iteration numbers (10, 20, 50, 300). The noise power increases with increasing interation number.Back to article page