Optical Security System using Phase-based Virtual Image and Interferometer
Optical Security System using Phase-based Virtual Image and Interferometer
复制标题
使用基于相位的虚拟图像和干涉仪的光学安全系统
DOI：
10.1007/s10043-003-0004-0
复制
发表时间：
2003
期刊：
影响因子：
--
通讯作者：
Soo
中科院分区：
文献类型：
--
作者：
D. Seo;Soo
提出了一种改进的基于三相位编码图像和干涉原理的光学防伪系统。该光学系统由一个待加密的相位编码虚像和两个相位编码图像、加密图像和解密密钥组成。所提出的加密是通过加密图像和相位编码虚拟图像的相乘来执行的，该虚拟图像不包含来自解密（原始）图像的任何信息。因此，即使未经授权的用户窃取并分析加密图像，他也不能重建所需的图像。该虚拟图像保护原始图像免受伪造和未经授权的访问。光学实验表明，该方法是一种非常有用的光学安全系统。
An improved optical security system is proposed based on three phase-encoded images and the principle of interference. This optical system consists of one phase-encoded virtual image to be encrypted and two phase-encoded images, encrypting image and decrypting key. The proposed encryption is performed by the multiplication of an encrypting image and a phase-encoded virtual image which does not contain any information from the decrypted (original) image. Therefore, even if an unauthorized user steals and analyzes the encrypted image, he cannot reconstruct the required image. This virtual image protects the original image from counterfeiting and unauthorized access. Optical experiments show the proposed method is a very useful optical security system.