Results 251 to 260 of about 52,493 (283)

The image multiple secret sharing schemes without pixel expansion

2011 International Conference on Machine Learning and Cybernetics, 2011
In this paper, two secret sharing schemes were proposed. The two schemes both have the characteristic that the share images they produced are with no pixel expansion. In encoding phase, the rotated share scheme creates two share images for hiding three secret images, whereas the Exclusive OR rotated scheme achieve three share images for hiding four ...
Ching-Lin Wang, Ching-Te Wang, Meng-Lin Chiang   +2 more
openaire   +1 more source

High-fidelity reversible data hiding based on pixel-value-ordering and pairwise prediction-error expansion

Journal of Visual Communication and Image Representation, 2016
Pixel-value-ordering (PVO) technique refers to the process of first ranking the pixels in a block and then modifying the maximum/minimum for reversible data hiding (RDH).
Bo Ou, Xiaolong Li, Jinwei Wang
exaly   +2 more sources

Reversible Data Hiding Based on Three-Circular-Pixel Difference Expansion

Fundamenta Informaticae, 2009
This paper proposes a reversible data hiding scheme based on three-circular-pixel (TCP) difference expansion. To embed a message in an image, the image is divided into three-pixel blocks, each of which is, then, transformed into a TCP block with two differences.
Ching-Chiuan Lin, Shun-Ping Yang, Nien-Lin Hsueh   +2 more
openaire   +1 more source

Data Hiding Using Multi-Pixel Difference Expansion

2018 3rd International Conference on Computer and Communication Systems (ICCCS), 2018
This paper proposed a reversible multiple layer data hiding to improve the method proposed by Arham et al. Using the relevance of pixels to modify the block size and change the scan mode can enhance image embedded capacity so that the maximum embedding amount of the original block was increased from 3 bits to 8 bits.
Chin-Feng Lee, Jau Ji Shen, Yu Hua Lai
openaire   +1 more source

An extended secret sharing scheme for colour images with fixed pixel expansion

International Journal of Electronic Security and Digital Forensics, 2008
An extended visual secret sharing scheme uses multiple innocent-looking cover images to hide a secret image such that none discloses any portion of the secret. In this article, an extended secret sharing technique is proposed that shares a secret colour image in a couple of significant images using a fixed pixel expansion factor of 9 for a colour space
Rabia Sirhindi, Mehreen Afzal, Saeed Murtaza   +2 more
openaire   +1 more source

Reversibility of image with balanced fidelity and capacity upon pixels differencing expansion

The Journal of Supercomputing, 2013
Reversible data hiding has attracted considerable attention in recent years. Being reversible, the decoder can extract hidden data and recover the original image completely, and the difference expansion (DE) scheme can lead to a lossless pixel after secret data exacting.
Fu-Hau Hsu, Min-Hao Wu, Shiuh-Jeng Wang, Chia-Ling Huang   +3 more
openaire   +1 more source

A Novel (2, 2) Visual Secret Sharing without the Pixel Expansion

2015 International Conference on Intelligent Information Hiding and Multimedia Signal Processing (IIH-MSP), 2015
Pixel expansion is a common drawback of traditional (2,2) visual secret sharing (VSS), unexpanded shares can decrease the bandwidth and save storage. In the literature, we introduce a novel (2,2) VSS scheme, that solved the pixel expansion and visual quality is almost equal with traditional (2,2) VSS.
Xin Liu, Shen Wang 0004, Weizhe Zhang, Xiamu Niu   +3 more
openaire   +1 more source

Research on Pixel Expansion of (2,n) Visual Threshold Scheme

2006 First International Symposium on Pervasive Computing and Applications, 2006
Two parameters, pixel expansion and contrast, are very important in visual cryptography. It 's very difficult to optimize both of them in theory. Based on combination, A (2, n) scheme, which existence has been proved theoretically, has been proposed in this paper. Meantime, the method of construct has been carried out.
Liguo Fang, Bin Yu
openaire   +1 more source

A (2,2) XOR-based visual cryptography scheme without pixel expansion

Journal of Visual Communication and Image Representation, 2019
Abstract Visual cryptography (VC) is a technique that encodes the content of a secret image into two or more images, which are called shares. These shares are printed on transparencies and superimposed to reveal the original secret image. Frequently, VC techniques require a pixel expansion and a good alignment, which reduces the final spatial ...
Max E. Vizcarra Melgar, Mylène C. Q. Farias   +1 more
openaire   +1 more source

Pixel expansion-free grey-scale image sharing method

The Imaging Science Journal, 2013
In recent years, many visual secret sharing technologies have been proposed to protect the security of secret images (black and white, grey scale or colour images). In 2005, Lukac and Plataniotis used the concept of the Naor–Shamir method to propose a visual secret sharing technology for sharing secret grey-scale images based on bit-plane decomposition.
C-L Liu, K-P Wang, D-C Lou
openaire   +1 more source