基于菲涅尔数字全息的图像加密方法  

Scheme of Image Encryption Based on Fresnel Digital Holography

作　　者：陈木生[1] 周伯萌[1] 

机构地区：[1]泉州师范学院理工学院,福建泉州362000

出　　处：《泉州师范学院学报》2009年第6期45-48,共4页Journal of Quanzhou Normal University

基　　金：福建省自然科学基金项目(2006J0220);福建省教育厅科技项目(JA08216;JA08216);泉州市科技项目(2009Z53)

摘　　要：研究基于Arnold变换和菲涅尔数字全息,小波变换和菲涅尔数字全息的图像加密方法.实现图像加密和解密,分析衍射距离、再现光波波长、图像剪切对图像加密的影响.结果表明:基于菲涅尔数字全息的图像加密方法能够提高图像加密的安全性、灵敏度和抗剪切能力.Image encryption method based on Arnold transform and Fresnel digital holography, wavelet transform and Fresnel digital holography is proposed. The method for image encryption and decryption is realized, and the influence of the wavelength of reconstructing wave and the distance of propagation on the reconstructing image is studied. The results show that the method will get better result of encryption and decryption,image encryption method based on Fresnel digital holography will improve the sensitivity of image scrambling and has a good robustness for image cropping.

关 键 词：图像置乱 菲涅尔数字全息 ARNOLD变换 小波变换 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]