Image hiding based on time-averaged fringes produced by non-harmonic oscillations

doi:10.1088/1464-4258/11/12/125411

Image hiding based on time-averaged fringes produced by non-harmonic oscillations

M Ragulskis et al 2009 J. Opt. A: Pure Appl. Opt. 11 125411 (11pp) doi: 10.1088/1464-4258/11/12/125411

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M Ragulskis¹, A Aleksa¹ and Z Navickas²
¹ Research Group for Mathematical and Numerical Analysis of Dynamical Systems, Kaunas University of Technology, Studentu 50-222, Kaunas LT-51368, Lithuania
² Department of Applied Mathematics, Kaunas University of Technology, Studentu 50-325B, Kaunas LT-51368, Lithuania
E-mail: minvydas.ragulskis@ktu.lt, algiment.aleksa@ktu.lt and zenonas.navickas@ktu.lt

Abstract. Image hiding based on time-averaged fringes produced by non-harmonic oscillations is presented in this paper. The secret image is embedded into the background moiré grating. Phase matching and initial stochastic phase deflection algorithms are used to encrypt the image. The decoding of the image is completely visual. The secret embedded image appears when the encrypted image is oscillated according to a predefined law of motion. No secret is leaked when the encrypted image is oscillated harmonically. Numerical experiments are used to illustrate the functionality of the method.

Keywords: visual cryptography, geometric moiré, interference fringes, time averaging, Bessel functions

Print publication: Issue 12 (December 2009)
Received 30 June 2009, accepted for publication 8 September 2009
Published 30 September 2009

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Image hiding based on time-averaged fringes produced by non-harmonic oscillations

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