Improvements of a two-in-one image secret sharing scheme based on gray mixing model
Journal of Visual Communication and Image Representation
Flexible visual cryptography scheme without distortion
IWDW'11 Proceedings of the 10th international conference on Digital-Forensics and Watermarking
Improving the visual quality of random grid-based visual secret sharing
Signal Processing
XOR-based meaningful visual secret sharing by generalized random grids
Proceedings of the first ACM workshop on Information hiding and multimedia security
Secret sharing with multi-cover adaptive steganography
Information Sciences: an International Journal
Color visual cryptography schemes for black and white secret images
Theoretical Computer Science
Sharing more information in gray visual cryptography scheme
Journal of Visual Communication and Image Representation
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A visual cryptography scheme (VCS) is a kind of secret sharing scheme which allows the encoding of a secret image into n shares distributed to n participants. The beauty of such a scheme is that a set of qualified participants is able to recover the secret image without any cryptographic knowledge and computation devices. An extended visual cryptography scheme (EVCS) is a kind of VCS which consists of meaningful shares (compared to the random shares of traditional VCS). In this paper, we propose a construction of EVCS which is realized by embedding random shares into meaningful covering shares, and we call it the embedded EVCS. Experimental results compare some of the well-known EVCSs proposed in recent years systematically, and show that the proposed embedded EVCS has competitive visual quality compared with many of the well-known EVCSs in the literature. In addition, it has many specific advantages against these well-known EVCSs, respectively.