Abstract

When image plane detectors are larger than the blur spot of the imaging optics, postdetection processing is required to reconstruct images with resolution commensurate with the imaging optics. We use the method of convex projections to increase image resolution by using each detector reading as a constraint set and projecting iteratively among these sets. One significant advantage of using convex projections is that the effect of dead detectors is less severe than in algorithms based on least-squares or localized backprojections.¹

© 1989 Optical Society of America