Constructions and Properties of k out of nVisual Secret Sharing Schemes
Designs, Codes and Cryptography
New Colored Visual Secret Sharing Schemes
Designs, Codes and Cryptography
Threshold Visual Cryptography Schemes with Specified Whiteness Levels of Reconstructed Pixels
Designs, Codes and Cryptography
Pattern Recognition Letters
Visual cryptography for gray-level images by dithering techniques
Pattern Recognition Letters
New visual secret sharing schemes using probabilistic method
Pattern Recognition Letters
Optimal colored threshold visual cryptography schemes
Designs, Codes and Cryptography
Probabilistic Visual Cryptography Schemes
The Computer Journal
Efficient visual secret sharing scheme for color images
Pattern Recognition
Integrated Computer-Aided Engineering
A new repeating color watermarking scheme based on human visual model
EURASIP Journal on Applied Signal Processing
On the security of a visual cryptography scheme for color images
Pattern Recognition
Image hiding based on circular geometric moiré
MATH'09 Proceedings of the 14th WSEAS International Conference on Applied mathematics
A novel visual secret sharing scheme for multiple secrets without pixel expansion
Expert Systems with Applications: An International Journal
Image hiding based on circular moiré fringes
WSEAS Transactions on Mathematics
Image secret sharing method with two-decoding-options: Lossless recovery and previewing capability
Image and Vision Computing
A comprehensive study of visual cryptography
Transactions on data hiding and multimedia security V
Secret image sharing with authentication-chaining and dynamic embedding
Journal of Systems and Software
Improvements of a two-in-one image secret sharing scheme based on gray mixing model
Journal of Visual Communication and Image Representation
Image security and biometrics: a review
HAIS'12 Proceedings of the 7th international conference on Hybrid Artificial Intelligent Systems - Volume Part II
On the equivalence of two definitions of visual cryptography scheme
ISPEC'12 Proceedings of the 8th international conference on Information Security Practice and Experience
Region-in-Region incrementing visual cryptography scheme
IWDW'12 Proceedings of the 11th international conference on Digital Forensics and Watermaking
On the security of multi-secret visual cryptography scheme with ring shares
IWDW'12 Proceedings of the 11th international conference on Digital Forensics and Watermaking
Sharing more information in gray visual cryptography scheme
Journal of Visual Communication and Image Representation
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A (t,n) visual cryptography scheme (VCS) encodes a secret image into n shadow images (shadows) distributed among n participants. When any qualified set of at least t participants stack their shadows, the secret image can be visually revealed. The first VCS proposed by Naor and Shamir was only designed for encrypting a black-and-white secret image; subsequently, some colored VCSs (CVCSs) for sharing colored images were proposed to enhance the applicability. In CVCSs, we usually use several color subpixels to represent a secret pixel where the number of subpixels is referred to as the pixel expansion. Generally, the CVCS requires a larger pixel expansion to produce more colors; however, this expansion will increase the shadow size. We therefore study the additive color mixing in a probabilistic way and propose a new CVCS whose pixel expansion is fixed and improves on the previous CVCSs, at the price of reducing the contrast quality to certain level.