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22 August 2017 Influence of a perturbation in the Gyrator domain for a joint transform correlator-based encryption system
Juan M. Vilardy, María S. Millán, Elisabet Pérez-Cabré
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Proceedings Volume 10453, Third International Conference on Applications of Optics and Photonics; 1045329 (2017) https://doi.org/10.1117/12.2275947
Event: Third International Conference on Applications of Optics and Photonics, 2017, Faro, Portugal
Abstract
We present the results of the noise and occlusion tests in the Gyrator domain (GD) for a joint transform correlator-based encryption system. This encryption system was recently proposed and it was implemented by using a fully phase nonzero-order joint transform correlator (JTC) and the Gyrator transform (GT). The decryption system was based on two successive GTs. In this paper, we make several numerical simulations in order to test the performance and robustness of the JTC-based encryption-decryption system in the GD when the encrypted image is corrupted by noise or occlusion. The encrypted image is affected by additive and multiplicative noise. We also test the effect of data loss due to partial occlusion of the encrypted information. Finally, we evaluate the performance and robustness of the encryption-decryption system in the GD by using the metric of the root mean square error (RMSE) between the original image and the decrypted image when the encrypted image is degraded by noise or modified by occlusion.
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Juan M. Vilardy, María S. Millán, and Elisabet Pérez-Cabré "Influence of a perturbation in the Gyrator domain for a joint transform correlator-based encryption system", Proc. SPIE 10453, Third International Conference on Applications of Optics and Photonics, 1045329 (22 August 2017); https://doi.org/10.1117/12.2275947
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KEYWORDS
Image encryption
Gyrators
Joint transforms
Optical correlators
Computer programming
Computer security
Imaging systems
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