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

2 November 2000 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

Proceedings Volume 4113, Algorithms and Systems for Optical Information Processing IV; (2000) https://doi.org/10.1117/12.405850
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

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.

Citation Download Citation

Wei-Chia Su, Bor Wang, Ching-Cherng Sun, and Ming-Wen Chang "Improvement of the signal-to-noise ratio of a double random phase encoding encryption system", Proc. SPIE 4113, Algorithms and Systems for Optical Information Processing IV, (2 November 2000); https://doi.org/10.1117/12.405850

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