Optoelectronic hybrid correlator based on a programmable LCTV spatial light modulator

Tianji Wang; Shining Yang; Yaotang Li; Shichao Zhang; Shaowu Fan; Huanrong Wen

doi:10.1117/12.22237

1 July 1990 Optoelectronic hybrid correlator based on a programmable LCTV spatial light modulator

Tianji Wang, Shining Yang, Yaotang Li, Shichao Zhang, Shaowu Fan, Huanrong Wen

Proceedings Volume 1319, Optics in Complex Systems; (1990) https://doi.org/10.1117/12.22237
Event: 15th International Optics in Complex Systems, 1990, Garmisch, Germany

Abstract

We describe a hybrid processing real time optical correlator that uses programmable liquid crystal teleiesion (LcTr) spatial optical modulator. A joint transform optical correlator with a photorefractive crystal BSO has been successfully applied to real time object recognition. Hoerer, a major shortcoming of this optical correlator is its sensitivity to the scale and orientation of the test image. Thus, its application is restricted. We present a scale- and rotational-invariant correlation hybrid processing system, namely a joint transform digital-optical correlator using photorefractive crystal BSO and programmable LCT spatial light modulator.

Citation Download Citation

Tianji Wang, Shining Yang, Yaotang Li, Shichao Zhang, Shaowu Fan, and Huanrong Wen "Optoelectronic hybrid correlator based on a programmable LCTV spatial light modulator", Proc. SPIE 1319, Optics in Complex Systems, (1 July 1990); https://doi.org/10.1117/12.22237

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