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Journal of Electronic Imaging

Color image encryption scheme based on 4-weighted fractional Fourier transform
Author(s): Sudhir Keshari; Shri Gopal Modani
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Paper Abstract

We propose an image encryption technique for color images by using conventional logarithms operator, chaotic map and 4-weighted fractional Fourier transform (4-WFRFT). The color image to be encrypted is initially separated into its primary color channels, red, green, and blue; each channel is concealed inside the same random mask by using the base-changing axiom of logarithms. Subsequently, each logarithmic-concealed channel is encrypted independently by using double random 4-WFRFT plane encoding technique. This technique utilizes two random phase mask that are developed by using a chaotic map. The parameters of RPMs and transform orders of 4-WFRFT utilized in each logarithm channel are considered as secret keys for encryption/decryption process. The robustness of the proposed technique is analyzed and discussed by presenting the experimental results.

Paper Details

Date Published: 18 September 2012
PDF: 6 pages
J. Electron. Imag. 21(3) 033018 doi: 10.1117/1.JEI.21.3.033018
Published in: Journal of Electronic Imaging Volume 21, Issue 3
Show Author Affiliations
Sudhir Keshari, Malaviya National Institute of Technology (India)
Shri Gopal Modani, Malaviya National Institute of Technology (India)

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