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Gyrator transform-based optical image encryption, using chaos
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DOI：10.1016/j.optlaseng.2008.10.013.png)
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We propose a new method for image encryption, using gyrator transform and chaos theory. Random phase masks are generated using chaos functions and are called as chaotic random phase masks. In the proposed technique, the image is encrypted using gyrator transform and two chaotic random phase masks. Three types of chaos functions have been used to generate the chaotic random phase masks. These chaos functions are the logistic map, the tent map and the Kaplan-Yorke map. The computer simulations are presented to verify the validity of the proposed technique. The mean square errors have been calculated. The robustness of the proposed technique to blind decryption in terms of rotation angle and the seed values of the chaotic random phase mask have been evaluated. The optical implementation of the encryption and the decryption technique has been proposed. (C) 2008 Published by Elsevier Ltd.
Keyword:
Image encryption/decryption
Gyrator transform
Logistic map
Tent map
Kaplan-Yorke map
Mean square error
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3.7
论文数:
7.3K
被引数:
1.7W
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Multiplexing in optical encryption by using an aperture system and a rotating sandwich random phase diffuser in the Fourier plane通过在傅立叶平面中使用孔径系统和旋转夹层随机相位扩散器在光学加密中进行多路复用
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