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Proceedings Paper

Liquid crystal display panel in an OPR system
Author(s): Haisong Liu; Minxian Wu; Guofan Jin; Gang Cheng; Qingsheng He
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Paper Abstract

In this paper, we develop an optoelectronic pattern recognition system based on an incoherent optical correlator. The real-time input image is correlated with stored database images consecutively after several necessary preprocessing steps, and the recognition result is given quickly. The key device for the optical correlation is a SHARP QA-1200 8.4' active matrix TFT liquid crystal display (LCD) panel which is used as two real-time spatial light modulators (SLMs) for both the input and the database image. Several practical difficulties when utilizing the LCD panel as a light intensity modulator have been overcome. Experimental results are given.

Paper Details

Date Published: 23 March 1998
PDF: 9 pages
Proc. SPIE 3386, Optical Pattern Recognition IX, (23 March 1998); doi: 10.1117/12.304782
Show Author Affiliations
Haisong Liu, Tsinghua Univ. (United States)
Minxian Wu, Tsinghua Univ. (China)
Guofan Jin, Tsinghua Univ. (China)
Gang Cheng, Tsinghua Univ. (United States)
Qingsheng He, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 3386:
Optical Pattern Recognition IX
David P. Casasent; Tien-Hsin Chao, Editor(s)

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