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Proceedings Paper

Improving the recognition ability of the photorefractive correlator by using an extensive complementary encoding
Author(s): Haisong Liu; Minxian Wu; Guofan Jin; Gang Chen; Qingsheng He; Yingbai Yan
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Paper 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.

Paper Details

Date Published: 17 August 1998
PDF: 5 pages
Proc. SPIE 3554, Photorefractive Materials: Phenomena and Related Applications II, (17 August 1998); doi: 10.1117/12.318119
Show Author Affiliations
Haisong Liu, Tsinghua Univ. (United States)
Minxian Wu, Tsinghua Univ. (China)
Guofan Jin, Tsinghua Univ. (China)
Gang Chen, Tsinghua Univ. (China)
Qingsheng He, Tsinghua Univ. (China)
Yingbai Yan, Tsinghua Univ. (China)


Published in SPIE Proceedings Vol. 3554:
Photorefractive Materials: Phenomena and Related Applications II
Peixian Ye; Tsutomu Shimura; Ratnakar R. Neurgaonkar, Editor(s)

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