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《Opto-electronic Engineering》 2001-01
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A Joint Transform Correlator with Noise Immunity

LU Shuo, LIU Wen yao, ZHANG Yi mo,WANG Jin tao, CHEN Xiao qing (College of Precision Instrument and Opto Electronic Engineering,Tianjin University, Tianjin 300072, China;Key Laboratory of Opto Electronic Information Technical Science, EMC ,Tianji  
Roberts gradient processing is carried out for the input image of joint transform correlator, and at the same time phase shift technique is applied to the reference image and binaryzation is implemented in power spectrum in the frequency domain. Compared with the common joint transform correlator, the new joint transform correlator has eliminated the direct current component of the power spectrum, sharpened correlation peak intensity and improved diffraction efficiency and recognition capacity. The noise immunity of the joint transform correlator has also been intensified. The predicted results are simulated by a computer in the paper.
【Fund】: 国家高技术 863-307主题 !(863-30 7-0 7-0 2 (0 5) )资助项目;; 北京大学视觉与听觉信息处理实验室基金资助项目
【CateGory Index】: TN911.74
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【Secondary References】
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1 WANG Xi-yuan(College of Physics and Electrical Information,Ningxia University,Yinchuan 750021,Ningxia,China);Complex wavelet domain image denoising based on Bayesian technique[J];Journal of Shaanxi Normal University(Natural Science Edition);2005-04
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