Near-Optimal Moire Grating for Chaotic Dynamic Visual Cryptography

  • Rita Palivonaite
  • Algimantas Fedaravicius
  • Algiment Aleksa
  • Minvydas Ragulskis
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 8237)


Image hiding based on chaotic oscillations and near-optimal moire gratings is presented in this paper. The secret image is embedded into a single cover image. The encrypted secret image appears in a form of time-averaged moire fringes when the cover image is oscillated in a predefined direction, according to a chaotic law of motion. The criterion of the optimality of a moire grating is based on the absolute difference between the standard deviation of time-averaged images of near-optimal moire gratings in the background and in the zones associated to the secret image. Genetic algorithms are used for the identification of a nearoptimal set of moire gratings for image hiding applications. Numerical experiments are used to illustrate the functionality of the method.


Visual cryptography Time-averaged moire fringes Chaotic oscillations 


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Copyright information

© Springer International Publishing Switzerland 2013

Authors and Affiliations

  • Rita Palivonaite
    • 1
  • Algimantas Fedaravicius
    • 2
  • Algiment Aleksa
    • 1
  • Minvydas Ragulskis
    • 1
  1. 1.Research Group for Mathematical and Numerical Analaysis of Dynamical SystemsKaunas University of TechnologyKaunasLithuania
  2. 2.Institute of Defence TechnologiesKaunas University of TechnologyLithuania

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