One-Dimensional Comparison Of Wiener Filtering And Richardson-Lucy Methods For Sectioned Restoration Of Space-Variant Digital Images
Image restoration; Richardson-Lucy method; Space-variant point-spread-function; Wiener filtering
One-dimensional sections of digital images with space-variant blurs from an uncorrected optical system are restored using Wiener filtering and the Richardson-Lucy method. The simulated blur is from a single-lens optical system configured at moderate focal-length-to-aperture ratio (f#) and near-infinite conjugate. The sections are taken over a range of field-angle displacements from on-axis to approximately 15-deg off-axis. The results identify a range of field angles over which Wiener filtering is useful for sectioned restoration of blurred images from an optical system with significant point-spread-function space-variance. The results also establish a field angle range over which an iterative restoration method such as Richardson-Lucy would be necessary to accommodate point-spread-function space-variance.
IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications
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Costello, Thomas P. and Mikhael, Wasfy B., "One-Dimensional Comparison Of Wiener Filtering And Richardson-Lucy Methods For Sectioned Restoration Of Space-Variant Digital Images" (2002). Scopus Export 2000s. 2599.