Title Near-optimal pitch of a moiré grating in dynamic visual cryptography
Authors Saunoriene, Loreta ; Petrauskiene, Vilma ; Aleksiene, Sandra ; Ragulskiene, Jurate
DOI 10.21595/jve.2018.20189
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Is Part of Journal of Vibroengineering. Kaunas : JVE International. 2018, Vol. 20, iss. 6, p. 2504-2514. ISSN 1392-8716. eISSN 2538-8460
Keywords [eng] dynamic visual cryptography ; near-optimal moiré grating ; harmonic oscillation ; chaotic oscillation
Abstract [eng] Dynamic visual cryptography (DVC) is a technique for the encryption and decryption of visual secret information. The confidential visual information in DVC is concealed embedding the secret image into the regular moiré grating. The secret can be perceived from the cover image if only the cover image is oscillated according to a predefined law of motion and time-averaging techniques are used. The security of the encryption procedure and the quality of the decrypted image depend on the proper preselection of the pitches of a moiré grating used in the encryption stage. This paper presents the main principles of the determination of near-optimal pair of the pitches of moiré grating as well as graphical schemes and analytical equations in case of harmonic and chaotic oscillations.
Published Kaunas : JVE International
Type Article
Language English
Publication date 2018
CC license CC license description