Three-dimensional optical encryption based on ptychography

Jun Zhang; Tuo Li; Yali Wang; Liang Qiao; Xiubo Yang; Yishi Shi

doi:10.1117/12.2202770

8 October 2015 Three-dimensional optical encryption based on ptychography

Jun Zhang, Tuo Li, Yali Wang, Liang Qiao, Xiubo Yang, Yishi Shi

Proceedings Volume 9675, AOPC 2015: Image Processing and Analysis; 96752P (2015) https://doi.org/10.1117/12.2202770
Event: Applied Optics and Photonics China (AOPC2015), 2015, Beijing, China

Abstract

We propose a novel optical encryption system for three-dimension imaging combined with three-dimension Ptychography. Employing the proposed cryptosystem, a 3D object can be encrypted and decrypted successfully. Compared with the conventional three-dimensional cryptosystem, not only encrypting the pure amplitude 3D object is available, but also the encryption of complex amplitude 3D object is achievable. Considering that the probes overlapping with each other is the crucial factor in ptychography, their complex-amplitude functions can serve as a kind of secret keys that lead to the enlarged key space and the enhanced system security. Varies of simulation results demonstrate that the feasibility and robust of the cryptosystem. Furthermore, the proposed system could also be used for other potential applications, such as three-dimensional information hiding and multiple images encryption.

Citation Download Citation

Jun Zhang, Tuo Li, Yali Wang, Liang Qiao, Xiubo Yang, and Yishi Shi "Three-dimensional optical encryption based on ptychography", Proc. SPIE 9675, AOPC 2015: Image Processing and Analysis, 96752P (8 October 2015); https://doi.org/10.1117/12.2202770

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KEYWORDS

3D image processing

Computer security

Imaging systems

Charge-coupled devices

Diffraction

Image encryption

Space reconnaissance

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