Published May 1, 1988
| Published
Journal Article
Open
Interference filters as nonlinear decision-making elements for three-spot pattern recognition and associative memories
Chicago
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Abstract
Simple patterns consisting of three spots (V and Γ) have been recognized by dividing, shifting, and recombining beams onto bistable ZnS interference filters. This experiment demonstrates AND-gate operation, cascading, and a moderate amount of parallelism, but a laser power of several watts was required and the response times were several milliseconds. An associative memory for fingerprint identification has been constructed using a VanderLugt correlator and an interference filter as a reflective thresholding device.
Additional Information
© 1988 Optical Society of America. Received 28 January 1988. Support from AFOSR, ARO, NSF, RADC/DARPA, SDIO, and the Optical Circuitry Cooperative is gratefully acknowledged. Special thanks to J. McCann for the phase gratings.Attached Files
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Additional details
- Eprint ID
- 31916
- Resolver ID
- CaltechAUTHORS:20120615-115025571
- Air Force Office of Scientific Research (AFOSR)
- Army Research Office (ARO)
- NSF
- Rome Air Development Center
- Defense Advanced Research Projects Agency (DARPA)
- Strategic Defense Initiative Organization (SDIO)
- Optical Circuitry Cooperative
- Created
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2012-06-18Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field