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Proceedings Paper

Photorefractive edge-enhancement and its application for pattern recognition
Author(s): Huayong Ge; Baohua Wang; Weiming Ji; Jianming Wei; Lutang Wang; Zhaoming Huang
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Paper Abstract

Coupling theory is employed to analyze the coupling gain and a novel optical system is presented for image edge-enhancement by employing photorefractive two-wave coupling in BaTiO3 crystal, in which the ordinarily discarded background light is recycled as the pump source to amplify the signal light. Further, we demonstrate the principle of optical correlation and compare the discrimination capability of two kinds of correlators by computer simulation, in one of which input images are edge-enhanced and in the other the ones do not experience edge-enhancement. At last, we draw a conclusion that edge-enhancement preprocessing can improve discrimination capability effectively.

Paper Details

Date Published: 12 May 2004
PDF: 8 pages
Proc. SPIE 5280, Materials, Active Devices, and Optical Amplifiers, (12 May 2004); doi: 10.1117/12.516043
Show Author Affiliations
Huayong Ge, Shanghai Univ. (China)
Baohua Wang, Shanghai Univ. (China)
Weiming Ji, Shanghai Univ. (China)
Jianming Wei, Shanghai Univ. (China)
Lutang Wang, Shanghai Univ. (China)
Zhaoming Huang, Shanghai Univ. (China)


Published in SPIE Proceedings Vol. 5280:
Materials, Active Devices, and Optical Amplifiers
Connie J. Chang-Hasnain; Dexiu Huang; Yoshiaki Nakano; Xiaomin Ren, Editor(s)

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