基于海明校验优化二值编码的联合变换相关器加密系统  

A joint transform correlator based on Hamming check optimized binary coding

作　　者：彭凯飞 沈学举 黄富瑜 刘毅杰 PENG Kaifei;SHEN Xuju;HUANG Fuyu;LIU Yijie(Department of Opto-electronics Engineering,Campus of Shijiazhuang,Army Engineering University,Shijiazhuang Hebei 050003,China)

机构地区：[1]陆军工程大学石家庄校区,石家庄050003

出　　处：《激光杂志》2020年第3期96-100,共5页Laser Journal

基　　金：国家自然科学基金(No.61801507)。

摘　　要：针对基于灰度图像二值编码的联合变换相关器(JTC)加密系统抗饱和噪音干扰能力差、解密图像质量有限的问题,提出了一种基于海明校验的灰度图像二值编码优化方法,并利用该方法设计了基于海明校验优化二值编码的JTC加密系统。该加密系统利用海明校验在解码过程中对因饱和噪音产生的错误进行纠正,从而有效消除了解密图像中的饱和噪音,提高了解密图像质量。加、解密仿真结果表明,海明校验优化后,解密图像与原始图像的相关系数(CC)由0.8237提高到0.9383,解密图像质量显著提高。Aiming at the problem of poor anti-saturation noise interference and limited image quality of joint transform correlator(JTC)encryption system based on binary coding for gray image,a binary coding optimization method based on Hamming check is proposed.This method is used to design a JTC encryption system based on Hamming check optimization binary coding.The encryption system uses Hamming check to correct the error caused by saturation noise during the decoding process to effectively eliminate the saturation noise in decrypted image and improve the quality of decrypted image.The simulation results of encryption and decryption show that the correlation coefficient(CC)between decrypted image and original image is improved from 0.8237 to 0.9383,and the quality of the decrypted image is significantly improved.

关 键 词：光学信息处理 光学图像加密 联合变换相关器 二值编码 海明校验 

分 类 号：O438.2[机械工程—光学工程]