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An overview of visual cryptography techniques

open access: yesMultimedia Tools and Applications, 2021
Visual cryptography is an encryption technique that decomposes secret images into multiple shares. These shares are digitally or physically overlapped to recover the original image, negating the need for complex mathematical operations or additional hardware.
Dyala R. Ibrahim   +2 more
exaly   +4 more sources

Cheating in Visual Cryptography

open access: yesDesigns, Codes and Cryptography, 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Gwoboa Horng   +2 more
openaire   +3 more sources

Region Incrementing Visual Cryptography

IEEE Signal Processing Letters, 2009
This letter presents a novel visual cryptography scheme, called region incrementing visual cryptography (RIVC), for sharing visual secrets with multiple secrecy levels in a single image. In the proposed n-level RIVC scheme, the content of an image S is designated to multiple regions associated with n secret levels, and encoded to n+1 shares with the ...
Ran-Zan Wang
openaire   +3 more sources

Structure Aware Visual Cryptography

open access: yesComputer Graphics Forum, 2014
AbstractVisual cryptography is an encryption technique that hides a secret image by distributing it between some shared images made up of seemingly random black‐and‐white pixels. Extended visual cryptography (EVC) goes further in that the shared images instead represent meaningful binary pictures. The original approach to EVC suffered from low contrast,
Bin Liu   +3 more
core   +3 more sources

Applications of visual cryptography

International Journal of Parallel, Emergent and Distributed Systems, 2011
Visual cryptography is a secret sharing scheme with only few known applications. This paper first modifies visual cryptography techniques to make them suitable for applications and then proposes some applications that use the modified techniques. These applications are secured communication system that are used to broadcast one or more secrets, multi ...
Subba Rao V. Yengisetty, Bimal K. Roy
openaire   +1 more source

Braille for Visual Cryptography

2014 IEEE International Symposium on Multimedia, 2014
Visual Cryptography (VC) has been studied as a significant way of information security. In VC, original secret is divided into two images called shares. VC shares show no clue for secret perceptually, whereas participants are able to obtain the secret by simply superimposing the shares. Despite the obvious advantages of VC in crucial secret protection,
Guangyu Wang   +2 more
openaire   +1 more source

Tagged Visual Cryptography

IEEE Signal Processing Letters, 2011
This letter presents a method for implementing visual cryptography (VC) in which an additional tag is attached to each generated share. The proposed (t, n), 2 ≤ t ≤ n tagged visual cryptography (TVC) scheme works like a traditional VC scheme does, where the original image is encoded in n shares in such a way that the secret can be revealed by ...
Ran-Zan Wang, Shuo-Fang Hsu
openaire   +1 more source

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