Image encryption based on pure intensity random coding and digital holography technique

Authors: Zhu, Banghe; Zhao, Haifa; Liu, Shutian

Source: Optik – International Journal for Light and Electron Optics, Volume 114, Number 2, 1 May 2003 , pp. 95-99(5)

Publisher: Urban & Fischer

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Abstract:

We propose a novel image encryption method that combines the pure intensity random encoding and the digital holography technique. A phase-shifting interferometer records both phase and amplitude information of a complex object with a CCD sensor array. The encryption is performed by placing two pure intensity random masks between the image to be encrypted and an intensity recording device. Electronic decryption can be performed with fast Fresnel reconstruction procedure. Numerical simulation results show the validity of the algorithm and an optoelectronic implementation setup is also presented.

Document Type: Research article

DOI: http://dx.doi.org/10.1078/0030-4026-00228

Affiliations: 1: Department of Physics, Harbin Institute of Technology, Harbin, 150001 PR China

Publication date: 2003-05-01