期刊
OPTICS COMMUNICATIONS
卷 354, 期 -, 页码 344-352出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2015.06.015
关键词
Gyrator wavelet transform; Image encryption; Optical asymmetric cryptosystem; Image compression
类别
资金
- Council of Scientific and Industrial Research, India (CSIR), Government of India [03/(1183)/10/EMR-II]
In this paper, we propose a new optical information processing tool termed as gyrator wavelet transform to secure a fully phase image, based on amplitude- and phase-truncation approach. The gyrator wavelet transform constitutes four basic parameters; gyrator transform order, type and level of mother wavelet, and position of different frequency bands. These parameters are used as encryption keys in addition to the random phase codes to the optical cryptosystem. This tool has also been applied for simultaneous compression and encryption of an image. The system's performance and its sensitivity to the encryption parameters, such as, gyrator transform order, and robustness has also been analyzed, It is expected that this tool will not only update current optical security systems, but may also shed some light on future developments. The computer simulation results demonstrate the abilities of the gyrator wavelet transform as an effective tool, which can be used in various optical information processing applications, including image encryption, and image compression. Also this tool can be applied for securing the color image, multispectral, and three-dimensional images. (C) 2015 Elsevier B.V. All rights reserved.
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