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器。该相关器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。
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.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2001年第8期836-841,共6页
Journal of Optoelectronics·Laser
关键词
光学信号处理
液晶光阀
联合变换相关
光折变晶体
liquid crystal light valve (LCLV)
nonlinear
joint transform correlation (JTC)
photorefractive crystal
