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- W2078646594 abstract "We present an holographic memory optical arrangement based on the successive shifting of a random pure-phase mask to achieve encrypted images multiplexing. The input images are encrypted to a stationary white noise using the usual double random encoding in the Fresnel domain. The encrypted information is imaged in a photorefractive crystal where also a reference beam impinges. In the holographic memory, a BSO crystal is used to provide both a recording medium and a phase conjugate mirror. The combination of these two features supplies at the same time the necessary exact cancellation of the random pure-phase mask as well as allows a real-time decryption process. Successive images are encrypted and position-encoded by speckle patterns arising from the random pure-phase mask in-plane shifting between exposures. We include experimental results to corroborate the multiplexing capability and the read-out fidelity of the proposed arrangement." @default.
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- W2078646594 date "2006-03-01" @default.
- W2078646594 modified "2023-10-09" @default.
- W2078646594 title "Multiplexing encryption–decryption via lateral shifting of a random phase mask" @default.
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- W2078646594 doi "https://doi.org/10.1016/j.optcom.2005.09.027" @default.
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