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Image encryption by using gyrator transform and Arnold transform

[+] Author Affiliations
Zhengjun Liu

Harbin Institute of Technology, Department of Automation Measurement and Control Engineering, Harbin 150001 China

Hang Chen

Harbin Institute of Technology, Department of Automation Measurement and Control Engineering, Harbin 150001 China

Ting Liu

Harbin Institute of Technology, Department of Automation Measurement and Control Engineering, Harbin 150001 China

Pengfei Li

Harbin Institute of Technology, Department of Automation Measurement and Control Engineering, Harbin 150001 China

Lie Xu

Harbin Institute of Technology, Department of Automation Measurement and Control Engineering, Harbin 150001 China

Jingmin Dai

Harbin Institute of Technology, Department of Automation Measurement and Control Engineering, Harbin 150001 China

Shutian Liu

Harbin Institute of Technology, Department of Physics, Harbin 150001 China

J. Electron. Imaging. 20(1), 013020 (March 28, 2011). doi:10.1117/1.3557790
History: Received November 03, 2009; Revised December 21, 2010; Accepted January 31, 2011; Published March 28, 2011; Online March 28, 2011
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We propose an optical image encryption algorithm based on Arnold transform and gyrator transform. The amplitude and phase, which are the outputs of gyrator transform, are separated into several sub-images. Arnold transform is introduced for scrambling the data of the sub-images. The random spectrum composed of the scrambled sub-images is transformed by gyrator transform. An iterative structure of the algorithm is designed for enhancing the security of the encryption algorithm. The parameters of gyrator transforms and separating scheme serve as the key of the encryption method. The encryption process can be implemented by an electro-optical setup. Some numerical simulations have been given to demonstrate the security and validity of this algorithm.

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© 2011 SPIE and IS&T

Citation

Zhengjun Liu ; Hang Chen ; Ting Liu ; Pengfei Li ; Lie Xu, et al.
"Image encryption by using gyrator transform and Arnold transform", J. Electron. Imaging. 20(1), 013020 (March 28, 2011). ; http://dx.doi.org/10.1117/1.3557790


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