Improvement of the signal-to-noise ratio of a double random phase encoding encryption system

Wei Chia Su; Bor Wang; Ching Cherng Sun; Ming Wen Chang

doi:10.1117/12.405850

Improvement of the signal-to-noise ratio of a double random phase encoding encryption system

Wei Chia Su, Bor Wang, Ching Cherng Sun, Ming Wen Chang

Department of Optics and Photonics

Research output: Contribution to journal › Conference article › peer-review

Abstract

We investigate the tolerance to data loss of a double random phase encoding encryption system. The signal-to-noise ratio of the decrypted image is investigated when a part of the encrypted image is lost. The SNR can be enhanced by reducing the ratio of the sampling number of the image to the total sampling number when electronic implementation is performed. In optical implementation, the SNR can be increased by using a phase mask with higher spatial frequency. Both the theory and computer simulations are demonstrated.

Original language	English
Pages (from-to)	181-186
Number of pages	6
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	4113
DOIs	https://doi.org/10.1117/12.405850
State	Published - 2000
Event	Algorithms and Systems for Optical Information Processing IV - San Diego, CA, USA Duration: 1 Aug 2000 → 2 Aug 2000

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JF - Proceedings of SPIE - The International Society for Optical Engineering

T2 - Algorithms and Systems for Optical Information Processing IV

Y2 - 1 August 2000 through 2 August 2000

ER -

Improvement of the signal-to-noise ratio of a double random phase encoding encryption system

Abstract

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