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25 October 1993 Laboratory implementation of optimal filter algorithms for coupled spatial light modulators
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Abstract
The classical matched filter used as the basis for optical correlation filters requires a spatial light modulator (SLM) which can effect fully complex modulation. Practical (single) SLMs cannot achieve this modulation, but many can be made to operate in a `phase-mostly' or `amplitude-mostly' mode. Successful correlators have been constructed using phase-mostly SLMs in the filter plane by disregarding the usually small coupling of amplitude. During the last few years, new theories have been developed on the construction of filters for coupled modulators for a variety of metrics. The liquid crystal cell modulator, which can be operated in a variety of coupled modes, presents a unique opportunity to implement these algorithms. This paper reports on such laboratory measurements.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Stanley E. Monroe Jr., Colin Soutar, and Richard D. Juday "Laboratory implementation of optimal filter algorithms for coupled spatial light modulators", Proc. SPIE 1959, Optical Pattern Recognition IV, (25 October 1993); https://doi.org/10.1117/12.160296
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