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Optical pattern recognition of letters by a joint-transform correlator using a ferroelectric liquid-crystal spatial
Optics Letters
|September 23, 2009
Abstract:
The use of a joint-transform correlator (JTC) as an optical pattern-recognition system for letters has been studied. The system incorporates a ferroelectric liquid-crystal spatial light modulator (LAPS-SLM). The LAPS-SLM has a high contrast ratio and a fast response time, permitting the JTC to recognize more reference letters simultaneously than a classical correlator can.

