Spatially-distributed recording of the composite filter using the pixelated liquid crystal display

Jinn Tsai, Shiuan-Huei Lin, Tai Chiung Hsieh, Ken-Yuh Hsu

Research output: Contribution to journalArticlepeer-review

Abstract

A new recording method using a liquid crystal display (LCD) as an input device to synthesize a composite filter is presented. The filter in the optical correlator makes use of the multiple diffraction orders from the pixelated structure of the LCD panel. During the recording stage, each training pattern is sequentially recorded as a sub-filter at different diffracted order by holographic technology. After that, an input pattern could be simultaneously processed with all sub-filters in parallel such that the composite filter can be achieved. This recording method with spatial distribution could avoid the low efficiency of the conventional multi-exposure. The simulations and experimental results show that this system can perform invariant correlation as a composite filter.

Original languageEnglish
Pages (from-to)169-174
Number of pages6
JournalOptics Communications
Volume163
Issue number4-6
DOIs
StatePublished - 15 May 1999

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