Improving the recognition ability of the photorefractive correlator by using an extensive complementary encoding

Haisong Liu; Minxian Wu; Guofan Jin; Gang Chen; Qingsheng He; Yingbai Yan

doi:10.1117/12.318119

17 August 1998 Improving the recognition ability of the photorefractive correlator by using an extensive complementary encoding

Haisong Liu, Minxian Wu, Guofan Jin, Gang Chen, Qingsheng He, Yingbai Yan

Author Affiliations +

Proceedings Volume 3554, Photorefractive Materials: Phenomena and Related Applications II; (1998) https://doi.org/10.1117/12.318119
Event: Photonics China '98, 1998, Beijing, China

Abstract

In this paper, we apply an extensive complementary encoding method, which has already been successfully used in an incoherent optical correlator based real-time target recognition processor to improve its discrimination ability, to a photorefractive crystal based Vander Lugt matched filter correlator for the same purpose. In this method, an original image and its complement image are regularly combined into an encoded image. The encoding process is applied to both the database images and the input target. The experimental results have proved that by using the extensive complementary encoding method, the discrimination ability of the photorefractive correlators can be improved effectively in a simple way.

Citation Download Citation

Haisong Liu, Minxian Wu, Guofan Jin, Gang Chen, Qingsheng He, and Yingbai Yan "Improving the recognition ability of the photorefractive correlator by using an extensive complementary encoding", Proc. SPIE 3554, Photorefractive Materials: Phenomena and Related Applications II, (17 August 1998); https://doi.org/10.1117/12.318119

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