Abstract

A joint Fourier-transform optical correlator for image recognition based on a novel hybrid photoconducting polymer–nematic liquid-crystal structure is described. The optically addressed active element that we have designed is capable of performing real-time image processing 20 times/s, at light-intensity levels of 10 mW/cm2 with dc operating voltage of the order of 10 V. We present the results of correlation of simple objects as well as complicated photographs. The sensitivity, durability, and reliability of the presented system open possibilities for many applications.

© 1998 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Observation of high gain in a liquid-crystal panel with photoconducting polymeric layers

Stanislaw Bartkiewicz, Andrzej Miniewicz, François Kajzar, and Malgorzata Zagórska
Appl. Opt. 37(29) 6871-6877 (1998)

All-optical and polarization-independent spatial filter based on a vertically-aligned polymer-stabilized liquid crystal film with a photoconductive layer

Chia-Yi Huang, Jia-Ming Ma, Tin-Shan Mo, Kuo-Ching Lo, Kuang-Yao Lo, and Chia-Rong Lee
Opt. Express 17(25) 22386-22392 (2009)

Experimental implementation of a Wiener filter in a hybrid digital–optical correlator

Philip Birch, Sovira Tan, Rupert Young, Triantafillos Koukoulas, Frederic Claret-Tournier, David Budgett, and Chris Chatwin
Opt. Lett. 26(8) 494-496 (2001)

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 (4)

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