Chinese Optics Letters, 2014, 12 (1): 010601, Published Online: Dec. 31, 2013
Secure and noise-free holographic encryption with a quick-response code Download: 708次
060.4785 Optical security and encryption 070.4560 Data processing by optical means 090.1760 Computer holography 100.4998 Pattern recognition, optical security and encryption
Abstract
In holographic encryption, double random-phase encoding in the Fresnel domain (DRPEiFD) is a prevalent encryption method because it is lensless and secure. However, noises bring adverse effects during decryption. In this letter, we introduce quick-response (QR) coding during encryption to resist noises. We transform the original information into a QR code and then encrypt the code as a hologram through DRPEiFD. To retrieve the input, we decrypt the hologram in the opposite manner to the encryption and subsequently obtain a QR code with noises. By scanning this code with proper applications in smartphones, we can obtain a noise-free retrieval. Numerical experiments and images scanned by a smartphone are shown to validate our proposed method.
Zhenbo Ren, Ping Su, Jianshe Ma, Guofan Jin. Secure and noise-free holographic encryption with a quick-response code[J]. Chinese Optics Letters, 2014, 12(1): 010601.