Contrast-Optimal k out of n Secret Sharing Schemes in Visual Cryptography

Construction of visual secret sharing schemes with almost optimal contrast

SODA '00 Proceedings of the eleventh annual ACM-SIAM symposium on Discrete algorithms

Threshold Visual Cryptography Schemes with Specified Whiteness Levels of Reconstructed Pixels

Designs, Codes and Cryptography

Improved Schemes for Visual Cryptography

Designs, Codes and Cryptography

A New Approach for Visual Cryptography

Designs, Codes and Cryptography

Visual cryptography for gray-level images by dithering techniques

Pattern Recognition Letters

Randomness in Visual Cryptography

STACS '00 Proceedings of the 17th Annual Symposium on Theoretical Aspects of Computer Science

Randomness in secret sharing and visual cryptography schemes

Theoretical Computer Science

A new definition of the contrast of visual cryptography scheme

Information Processing Letters

Random grid-based visual secret sharing for general access structures with cheat-preventing ability

Journal of Systems and Software

Perfect reconstruction of black pixels revisited

FCT'05 Proceedings of the 15th international conference on Fundamentals of Computation Theory

A user-friendly secret image sharing scheme with reversible steganography based on cellular automata

Journal of Systems and Software

Multi-pixel encryption visual cryptography

Inscrypt'11 Proceedings of the 7th international conference on Information Security and Cryptology