Title

One-dimensional comparison of Wiener filtering and Richardson-Lucy methods for sectioned restoration of space-variant digital images

Authors

Authors

T. P. Costello;W. B. Mikhael

Comments

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Abbreviated Journal Title

IEEE Trans. Circuits Syst. I-Fundam. Theor. Appl.

Keywords

image restoration; Richardson-Lucy method; space-variant; point-spread-function; Wiener filtering; Engineering, Electrical & Electronic

Abstract

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.

Journal Title

Ieee Transactions on Circuits and Systems I-Fundamental Theory and Applications

Volume

49

Issue/Number

4

Publication Date

1-1-2002

Document Type

Article

Language

English

First Page

518

Last Page

522

WOS Identifier

WOS:000175044400014

ISSN

1057-7122

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