Results 211 to 220 of about 1,949,204 (276)

Reversible data hiding method based on pixel expansion and homomorphic encryption

Journal of Intelligent & Fuzzy Systems, 2020
Digital image steganography algorithms usually suffer from a lossy restoration of the cover content after extraction of a secret message. When a cover object and confidential information are both utilised, the reversible property of the cover is inevitable.
Anushiadevi, R., Praveenkumar, Padmapriya, Rayappan, John Bosco Balaguru, Amirtharajan, Rengarajan   +3 more
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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
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Cheating Immune Visual Cryptographic Scheme with Reduced Pixel Expansion

2018
One of the drawbacks in visual cryptography is cheating attacks, where the malicious adversaries can cheat the honest participant by submitting fake shares during reconstruction phase. Cheating immune visual cryptographic schemes are used for mitigating cheating attacks in visual cryptography.
Kanakkath Praveen, M. Sethumadhavan
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(2,3) RIVC Scheme in Visual Cryptography without Pixel Expansion

2013 2nd International Conference on Advanced Computing, Networking and Security, 2013
Region Incrementing Visual Cryptography (RIVC) was first introduced by R Z Wang in 2009. (2, n) region incrementing visual cryptographic scheme gradually reconstructs the secrets in a single image with multiple security levels. But Wang's scheme suffers from color reversal and pixel expansion.
Anila Thankappan, M. Wilscy
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An Insight into Pixel Value Ordering Prediction Based Prediction-error Expansion

IEEE Transactions on Information Forensics and Security, 2020
As the core of prediction-error expansion technique, prediction method has a fundamental impact on performance of reversible data hiding. Pixel value ordering (PVO) prediction has been extensively investigated for its high accuracy. However, the correlation of pixels within block has not been fully exploited yet.
Wenguang He, Zhanchuan Cai
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Novel Visual Cryptography Schemes Without Pixel Expansion for Halftone Images

Canadian Journal of Electrical and Computer Engineering, 2014
Visual cryptography (VC) is a secret-sharing scheme which uses images distributed as shares such that, when the shares are superimposed, a hidden secret image is revealed. While VC was developed for application to binary images, and is inherently based on binary logical operations, it can be applied to grayscale images through their halftone ...
Nazanin Askari, Howard M. Heys, Cecilia R. Moloney   +2 more
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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
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A (2,2) secret sharing scheme for visual cryptography without Pixel Expansion

2015 International Conference on Electrical, Electronics, Signals, Communication and Optimization (EESCO), 2015
Secret sharing scheme denes a method by which a secret image can be distributed between a group of participants, whereby each participant is collected a piece of the secret. This piece of the secret is known as a share. The original secret image can be only be recovered when a sufficient number of shares are combined together.
Mahmoud E. Hodeish, V. T. Humbe
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A reversible data hiding scheme based on prediction-error expansion using pixel-based pixel value ordering predictor

2017 Artificial Intelligence and Signal Processing Conference (AISP), 2017
In this paper, a reversible data hiding (RDH) scheme based on prediction-error expansion (PEE) technique is proposed. PEE-based RDH methods exploit the correlations between neighboring pixels of the cover image to predict the pixel values and then embed data into the expanded prediction-errors. Traditional predictors exploit only the neighboring pixels
Peyman Rahmani, Gholamhossein Dastghaibyfard   +1 more
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A Cheat-Prevention Visual Secret Sharing Scheme with Efficient Pixel Expansion

IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2013
A visual secret sharing (VSS) scheme with minimum pixel expansion is proposed to prevent malicious participants from deceiving an honest participant. A VSS scheme encrypts a secret image into pieces referred to as shares where each participant keeps a share so that stacking sufficient number of shares recovers the secret image.
Shenchuan LIU, Masaaki FUJIYOSHI, Hitoshi KIYA   +2 more
openaire   +2 more sources