A Rumination of Error Diffusions in Color Extended Visual Cryptography

International Journal of Computer Trends and Technology (IJCTT)          
© 2014 by IJCTT Journal
Volume-15 Number-1
Year of Publication : 2014
Authors : P.Pardhasaradhi , P.Seetharamaiah
DOI :  10.14445/22312803/IJCTT-V15P108


P.Pardhasaradhi , P.Seetharamaiah. "A Rumination of Error Diffusions in Color Extended Visual Cryptography". International Journal of Computer Trends and Technology (IJCTT) V15(1):36-40, Sep 2014. ISSN:2231-2803. www.ijcttjournal.org. Published by Seventh Sense Research Group.

Abstract -
Color visual cryptography (VC) is a secret sharing scheme which uses to encrypt a secret message into n halftone image shares. The users can recover the secret image by stacking their shares, and then secret image can be revealed. In extended visual cryptography, the share images are constructed to contain meaningful cover images. Halftoning and visual information pixel (VIP) is the important feature, which provides immunity at the early stage of cryptography. In this paper we make a rumination of various error diffusions and visual information pixel (VIP) synchronization techniques to generate meaningful color shares with high visual quality and compare the respective algorithms for parameters such as PSNR and perceived error.

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Color meaningful shares, halftoning, error diffusion, visual cryptography (VC).