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| 基于液晶光阀非线性的光折变联合变换相关器 | |
| 引用本文： | 刘艳铬,周文远,等.基于液晶光阀非线性的光折变联合变换相关器[J].光电子．激光,2001,12(8):836-841. |
| 作者姓名： | 刘艳铬 周文远 |
| 作者单位： | 1. 天津大学精密仪器与光电子工程学院, 2. 南开大学物理科学学院, 3. 南开大学现代光学研究所, |
| 摘 要： | 提出一种基于液晶光阀非线性和光折变晶体实时动态存储特性的联合变换相关顺。该相关顺能实现输入物的微分、对比度反转等丰富图像的联合变换相关。计算机模拟分析了不同输入场景情况下图像的正像、微分像和对比度反转像联合变换相关的特点。 |
| 关 键 词： | 光学信号处理 液晶光阀 联合变换相关 光折变晶体 |
| 文章编号： | 1005-0086(2001)08-0836-06 |
| 修稿时间： | 2001年2月8日 |
A Photorefractive Joint Transform Correlator Based on the Nonlinear Transforming Ability of Liquid Crystal Light Valve |
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| LIU Yan ge,ZHOU Wen yuan,KANG Hui,ZHAN Yuan ling,ZHAI Hong chen.A Photorefractive Joint Transform Correlator Based on the Nonlinear Transforming Ability of Liquid Crystal Light Valve[J].Journal of Optoelectronics·laser,2001,12(8):836-841. | |
| Authors: | LIU Yan ge ZHOU Wen yuan KANG Hui ZHAN Yuan ling ZHAI Hong chen |
| Affiliation: | LIU Yan ge 1,ZHOU Wen yuan 2,KANG Hui 2,ZHAN Yuan ling 2,ZHAI Hong chen 3 |
| Abstract: | A photorefractive joint transform correlator(JTC) based on the nonlinear transforming ability of liguid crystal light valve(LCLV) is presented.The real time image differentiating and image grayscale reverse is performed with the nonlinear transforming ability of LCLV only by changing its biasing voltage.Joint transform spectrum is recorded by photorefractive crystal LiNbO 3.The JTC of positive,differential and grayscale reverse image of an input scene can be real time performed using the JTC.Computer simulative and experimental results of JTC using different input scene are given and analyzed. |
| Keywords: | liquid crystal light valve (LCLV) nonlinear joint transform correlation (JTC) photorefractive crystal |
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