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

研究成果: 雜誌貢獻 › 會議論文 › 同行評審

摘要

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.

原文	???core.languages.en_GB???
頁（從 - 到）	181-186
頁數	6
期刊	Proceedings of SPIE - The International Society for Optical Engineering
卷	4113
DOIs	https://doi.org/10.1117/12.405850
出版狀態	已出版 - 2000
事件	Algorithms and Systems for Optical Information Processing IV - San Diego, CA, USA 持續時間: 1 8月 2000 → 2 8月 2000

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

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