Wang Xiaogang, Zhao Daomu, Jing Feng, Wei Xiaofeng
Opt Express. 2006 Feb 20;14(4):1476-86. doi: 10.1364/oe.14.001476.
A new method is proposed in this paper for the synthesis and encryption of information with digital holography technique and virtual optics. By using a three-step phase-shifting interferometry, the fused or subtracted digital hologram can be calculated from different interference patterns. To protect the digital data that can be transmitted through communication channel, an encryption approach based on virtual optics is also proposed. The encryption method proposed is based on extended fractional Fourier transforms. Both the encryption and decryption processes are performed in all-digital manner. The encrypted data and the synthesized data reconstructed numerically also can be stored and transmitted in the conventional communication channel. Numerical simulation results are given to verify the proposed idea.
本文提出了一种利用数字全息技术和虚拟光学进行信息合成与加密的新方法。通过使用三步相移干涉测量法，可以从不同的干涉图样计算出融合或相减的数字全息图。为了保护可通过通信信道传输的数字数据，还提出了一种基于虚拟光学的加密方法。所提出的加密方法基于扩展分数傅里叶变换。加密和解密过程均以全数字方式进行。加密数据和通过数值重建的合成数据也可以在传统通信信道中存储和传输。给出了数值模拟结果以验证所提出的想法。
