中文摘要：

针对于目前监控视频像素点数量日益增大的现状 ,提出了一种利用光学手段进行视频加密的方法, 将加密速率等同为了光速,彻底解决了图像数据量急剧增大给现行加密算法带来的巨大压力 。利用超混沌系 统对光学加密技术中的双随机相位编码系统进行了改造,并对超混沌序列的产生过程进行了 推导。在提高加 密效率的同时,极大程度地提升了视频传输过程中的安全性。同时,使用彩色图像通道分离 技术实现了单通道 彩色视频图像加密,降低了系统的复杂度,提升了系统的可实现性。对本文所提加密方法的 加 密过程的仿真结果表明,本文提出的加密技术能够获得理想的视频加密效 果。与基于双随机相位编码的光加密技术进行对比的结果表明,本文系统在相邻像素相关性 方面具有更高的抗攻击能力。

英文摘要：

Considering the status of surveillance video pixels growing gradually, this paper proposes a video encryption method using pure optical means,which makes video encryption rate equ al to the speed of light,so that it can completely solve the existing encryption algorithm′s pressure brought by th e sharp increase of image data.In this paper,the double random phase encoding system is modified by ultra-chaotic system,and the ultra-chaotic sequence generation process is deduced.So we can improve encryption efficiency while greatly enhance the video transmission security.At the same time,in order to reduce complexity of system and increase the feasibility of system,using a color image channel separation technology is used to achieve the color video encryption using one single channel. The simulation result shows that the proposed encryption technology can achieve the desired effect of video encryption.At las t,Compared with double random phase encoding optical encr yption method,the double chaos phase encoding video encryption method pro posed in this paper has a higher anti-attack capability for the adjacent pixel correlation coefficient.