Abstract

A study has been made on restoration of degraded images utilizing spatial filtering techniques in a coherent optical processor. This study differs from other coherent approaches in that the spatial filters employed contain only composite gratings that are quite simple to produce. A general method of synthesizing the appropriate composite gratings for the linearly smeared as well as multiply exposed and out-of-focus images will be presented in some detail with experimental results. The extension of the method of synthesis to other types of degradation will be briefly discussed. in Appendix A.

© 1973 Optical Society of America

Single Step Detection of Blurred Images in a Coherent Optical Processor

D. P. Jablonowski and Sing H. Lee
Appl. Opt. 12(7) 1713-1716 (1973)

Incoherent processor for restoring images degraded by a linear smear

L. Celaya and S. Mallick
Appl. Opt. 17(14) 2191-2197 (1978)

Coherent Optical Scanning Analog Processor

David A. Ansley
Appl. Opt. 12(12) 2890-2893 (1973)

Interferometric technique for recording and restoring images degraded by unknown aberrations*

W. T. Rhodes and J. W. Goodman
J. Opt. Soc. Am. 63(6) 647-657 (1973)

Restoration of color images degraded by chromatic aberrations

J. Bescos, I. Glaser, and A. A. Sawchuk
Appl. Opt. 19(22) 3869-3876 (1980)