基于双随机编码正交映射的全息图像加密

针对全息图像加密的要求,提出了一种双随机正交映射的全息图像加密算法.首先引入两个独立白噪声随机图像,通过双随机相位的加密,得到图像信号整个矩阵；接着引入哈德码矩阵把双随机相位的加密图像和正交矩阵的相位根据哈密尔顿算法来构造映射关系；最后经过扩束镜的物光波和密匙光波相互干涉,把频域的密钥和空域的密钥插入图像的灰度分量中.仿真实验证明了该方法的有效性,只有在频域和空域共同解密下才能恢复原图.

Holographic Image Encryption Based On The Dual Random Code Orthogonal Mapping

Aiming at the holographic image encryption requirements, put forward a kind of dual random orthogonal mapping holographic image encryption algorithm. At first introduces two independent white noise random images through the dual random phase encryption, get image signal the whole matrix; Then introduce Hudson yards matrix put two random phase encryption image and orthogonal matrix algorithm to structure the phase according to Hamilton; mapping relations Finally after beam expander mirror the content after key light waves and mutual interference with the frequency domain, the key and the airspace key inserted in the gray component image. Simulation experiments show the effectiveness of the method, only in the frequency domain and the airspace could restore the original under common decryption.