The semipublic encryption for visual cryptography using Q'tron neural networks
Journal of Network and Computer Applications - Special issue: Network and information security: A computational intelligence approach
Improved Data Hiding Technique for Shares in Extended Visual Secret Sharing Schemes
ICICS '08 Proceedings of the 10th International Conference on Information and Communications Security
Multiple Watermarking in Visual Cryptography
IWDW '07 Proceedings of the 6th International Workshop on Digital Watermarking
An extended secret sharing scheme for colour images with fixed pixel expansion
International Journal of Electronic Security and Digital Forensics
A novel secret image sharing scheme for true-color images with size constraint
Information Sciences: an International Journal
Efficient multi-secret image sharing based on Boolean operations
Signal Processing
High-Entropy visual identification for touch screen devices
ISPEC'12 Proceedings of the 8th international conference on Information Security Practice and Experience
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In the traditional visual cryptography scheme, a sharedsecret image can be revealed without any cryptographiccomputations. Unfortunately, the revealed secret imageof the conventional visual cryptography scheme is almostblack and white. Recently, some colored visual cryptographyschemes based on modified visual cryptography havebeen proposed. By means of a few additional computations,users can hide a colored secret image into some shares.However, the size of the shares and the implementation complexityin these schemes depend on the number of colors appearingin the secret image. In other words, when the secretimage contains a great number of colors, these schemes willbecome impractical. In this paper, we propose a new secretcolor image sharing scheme based on modified visual cryptography.This scheme provides a more efficient way to hidea gray image (256-colors) in different shares. Furthermore,the size of the shares is fixed; it does not vary when the numberof colors appearing in the secret image differs.