Photorefractive edge-enhancement and its application to pattern recognition

Huayong Ge; Baohua Wang; Weiming Ji; Jianming Wei; Lutang Wang; Zhaoming Huang

doi:10.1117/12.516043

12 May 2004 Photorefractive edge-enhancement and its application for pattern recognition

Huayong Ge, Baohua Wang, Weiming Ji, Jianming Wei, Lutang Wang, Zhaoming Huang

Proceedings Volume 5280, Materials, Active Devices, and Optical Amplifiers; (2004) https://doi.org/10.1117/12.516043
Event: Asia-Pacific Optical and Wireless Communications, 2003, Wuhan, China

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.

Citation Download Citation

Huayong Ge, Baohua Wang, Weiming Ji, Jianming Wei, Lutang Wang, and Zhaoming Huang "Photorefractive edge-enhancement and its application for pattern recognition", Proc. SPIE 5280, Materials, Active Devices, and Optical Amplifiers, (12 May 2004); https://doi.org/10.1117/12.516043

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