Enhancement of real-time optical pattern recognition via Ce:KNSBN crystal

Qinglin Guo; Baolai Liang; Guangsheng Fu; Zhaoqi Wang

doi:10.1117/12.441663

24 September 2001 Enhancement of real-time optical pattern recognition via Ce:KNSBN crystal

Qinglin Guo, Baolai Liang, Guangsheng Fu, Zhaoqi Wang

Proceedings Volume 4554, Object Detection, Classification, and Tracking Technologies; (2001) https://doi.org/10.1117/12.441663
Event: Multispectral Image Processing and Pattern Recognition, 2001, Wuhan, China

Abstract

In this paper we present a coherent image processor, which uses the loop-like nonlinear diffraction property of the Ce:KNSBN photorefractive crystal to achieve real-time edge- enhanced optical correlation and optical pattern recognition. The full-width-at-half-maximum of the auto- correlation peak is decreased four times by the edge- enhancement operation. The intensity ratio between auto- correlation peak and the cross-correlation peak is improved nearly two times. As the same time the lobe of the auto- correlation peak and the background 'clutter' noise are obviously suppressed. Therefore the discrimination of this system achieves great improvement.

Citation Download Citation

Qinglin Guo, Baolai Liang, Guangsheng Fu, and Zhaoqi Wang "Enhancement of real-time optical pattern recognition via Ce:KNSBN crystal", Proc. SPIE 4554, Object Detection, Classification, and Tracking Technologies, (24 September 2001); https://doi.org/10.1117/12.441663

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