
Proceedings Paper
Double image encryption using gyrator wavelet transformFormat | Member Price | Non-Member Price |
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Paper Abstract
In this paper, we implement a novel optical information processing tool termed as gyrator wavelet transform for the
application of double image encryption using amplitude- and phase-truncation approach. This approach enhances the key
space in an asymmetric cryptosystem by adding supplementary security layers, i.e., family of mother wavelet and the
gyrator transform order. Double input images bonded with random phase masks are independently gyrator transformed.
Amplitude truncation of obtained spectrum generates individual and universal keys while phase truncation generates two
real-valued functions. Each of the retrieved amplitude function is discrete wavelet transformed, which results into four
different frequency bands. We have fused the obtained wavelet spectrum of an individual image by again gyrator
transforming them following amplitude- and phase truncation. The obtained real-valued functions corresponding to each
image are bonded to form the encrypted image. After using the correct universal key, individual asymmetric key, type of
wavelet, and correct gyrator transform order, the original images are retrieved successfully. Numerical simulation results
prove that the proposed scheme is more flexible and effective than existing wavelet fusion schemes.
Paper Details
Date Published: 15 June 2015
PDF: 6 pages
Proc. SPIE 9654, International Conference on Optics and Photonics 2015, 96542D (15 June 2015); doi: 10.1117/12.2181708
Published in SPIE Proceedings Vol. 9654:
International Conference on Optics and Photonics 2015
Kallol Bhattacharya, Editor(s)
PDF: 6 pages
Proc. SPIE 9654, International Conference on Optics and Photonics 2015, 96542D (15 June 2015); doi: 10.1117/12.2181708
Show Author Affiliations
Isha Mehra, Indian Institute of Technology Patna (India)
Naveen K. Nishchal, Indian Institute of Technology Patna (India)
Published in SPIE Proceedings Vol. 9654:
International Conference on Optics and Photonics 2015
Kallol Bhattacharya, Editor(s)
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