Artifact reduction for set theoretic super resolution image reconstruction with edge adaptive constraints and higher-order interpolants

In this paper, we propose to improve the POCS-based superresolution reconstruction (SRR) methods in two ways. First, the discretization of the continuous image formation model is improved to explicitly allow for higher order interpolation methods to be used. Second, the constraint sets are modified to reduce the amount of edge ringing present in the high resolution image estimate. This effectively regularizes the inversion process.