Near-Optimal Moire Grating for Chaotic Dynamic Visual Cryptography
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.
KeywordsVisual cryptography Time-averaged moire fringes Chaotic oscillations
Unable to display preview. Download preview PDF.
- 22.Ragulskis, M., Sanjuan, M.A., Saunoriene, L.: Applicability of time-average moire techniques for chaotic oscillations. Physical Review E 79(3), 036208 (2007)Google Scholar
- 23.Holland, J.H.: Adaptation in Natural and Artificial Systems: An Introductory Analysis with Application to Biology, Control, and Artificial Intelligence, 2nd edn. The MIT Press, Cambridge (1992)Google Scholar
- 24.Whitley, D.: A genetic algorithm tutorial. Statistics Computing 4(2), 65–85 (1994)Google Scholar