Abstract

The Litton magnetooptic spatial light modulator has a periodic structure which produces a replicated Fourier transform under coherent illumination. As a result, this modulator is not responsive to edge enhancement by the conventional means of a centered dc blocking spot in the transform plane of a coherent optical processor. Alternative spatial filtering masks for edge enhancement are described, which produce output images having dark edges on a light background as well as masks which produce bright edges on a dark background. Adjustable edge widths can be achieved. Both bright and dark edges can be produced in the same output image. One edge enhancement method requires no spatial filter mask.

© 1986 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Image enhancement by nonlinear signal processing

Bahram Javidi, Jack Ruiz, and Carol Ruiz
Appl. Opt. 29(32) 4812-4818 (1990)

Edge enhancement of a phase-conjugate image with a mutually pumped phase conjugator

Jan M. Yarrison-Rice, Edward J. Sharp, Gary L. Wood, and R. R. Neurgaonkar
Appl. Opt. 35(11) 1904-1910 (1996)

White light optical processor for edge enhancement and spectral filtering

Fred M. Dickey and Donald J. Moore
Appl. Opt. 18(10) 1679-1683 (1979)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (20)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription