Results 1 to 10 of about 635 (199)
A Novel XOR-Based Threshold Visual Cryptography with Adjustable Pixel Expansion [PDF]
Applied Sciences (Switzerland), 2020 A ( k , n ) visual cryptography (VC) scheme encodes a secret image into n shadows that are printed on transparencies distributed among a group of n participants secretly, and reveal the secret image by stacking no less than k of them.
Xingxing Jia, Daoshun Wang
exaly +4 more sources
Fault-Tolerant Visual Secret Sharing Schemes without Pixel Expansion
Applied Sciences (Switzerland), 2016 Visual cryptography encrypts a secret image into two meaningless random images, called shares, such that it can be decrypted by human vision without any calculations.
Song Guo +2 more
exaly +3 more sources
Reversible Data Hiding Based on Pixel-Value-Ordering and Prediction-Error Triplet Expansion
Mathematics, 2021 Pixel value ordering and prediction error expansion (PVO+PEE) is a very successful reversible data hiding (RDH) scheme. A series of studies were proposed to improve the performance of the PVO-based scheme. However, the embedding capacity of those schemes
Ji-Hwei Horng +2 more
exaly +3 more sources
Maximal Independent Sets for the Pixel Expansion of Graph Access Structure
International Journal of Industrial Engineering and Production Research, 2008 : A visual cryptography scheme based on a given graph G is a method to distribute a secret image among the vertices of G, the participants, so that a subset of participants can recover the secret image if they contain an edge of G, by stacking their ...
M. Hadian Dehkordi, A. Cheraghi
doaj +3 more sources
XOR-Based (n, n) Visual Cryptography Schemes for Grayscale or Color Images with Meaningful Shares
Applied Sciences, 2022 XOR-based Visual Cryptography Scheme (XOR-based VCS) is a method of secret image sharing. The principle of XOR-based VCS is to encrypt a secret image into several encrypted images, called shares.
Yu-Hong Chen, Justie Su-Tzu Juan
doaj +1 more source
Pixel grafting: A novel skin graft expansion technique
Journal of Cutaneous and Aesthetic Surgery, 2021 Skin grafting is the transplantation of skin, a routinely performed procedure to cover the loss of skin. Skin is the largest organ of the body, which falls short of availability in extensive injuries, especially burns. In such a situation, pixel grafting, a novel expansion technique helps to cover a large area with less skin harvest.
Chavan, Vinayak +7 more
openaire +2 more sources
Visual cryptography scheme on graphs with $m^{*}(G)=4$ [PDF]
Transactions on Combinatorics, 2019 Let $G=(V,E)$ be a connected graph and $\Gamma (G)$ be the strong access structure where obtained from graph $G$. A visual cryptography scheme (VCS) for a set $P$ of participants is a method to encode a secret image such that any pixel of this image ...
Mahmood Davarzani
doaj +1 more source
Analysis and design of visual secret sharing scheme for gray image
网络与信息安全学报, 2020 Existing gray visual secret sharing (GVSS) convert the original image into black-white binary image for processing,which causes the pixel information loss problem.For this purpose,a kind of GVSS based on gray superposition was proposed.For each gray ...
Jian LIU, Yi ZHANG, Yuling LIU, Hao HU
doaj +3 more sources
A Novel Steganography-Based Pattern for Print Matter Anti-Counterfeiting by Smartphone Cameras
Sensors, 2022 Print matter authentication based on anti-counterfeiting techniques has received continuously increasing concern from academia and industry. However, the existing printing anti-counterfeiting solutions often have the defects of poor identification ...
Hong Zheng +4 more
doaj +1 more source
International Journal of Applied Earth Observations and Geoinformation, 2021 Much environmental enforcement in the United States has historically relied on either self-reported data or physical, resource-intensive, infrequent inspections.
Ben Chugg +4 more
doaj +1 more source