Results 261 to 270 of about 602,393 (302)

A Novel Difference Expansion Transform for Reversible Data Embedding

IEEE Transactions on Information Forensics and Security, 2008
Reversible data embedding theory has marked a new epoch for data hiding and information security. Being reversible, the original data and the embedded data should be completely restored.
Hyoung Joong Kim, Yun Qing Shi, Hyon-Gon Choo   +2 more
exaly   +2 more sources

A Sum-Difference Expansion Scheme for Sparse Array Construction Based on the Fourth-Order Difference Co-Array [PDF]

IEEE Signal Processing Letters, 2022
A generalized sum-difference expansion scheme is proposed to construct sparse arrays based on the fourth-order difference co-array with increased degrees of freedom (DOFs).
Zixiang Yang, Qing Shen, Ｗei Liu
exaly   +2 more sources

Difference Expansion Based Reversible Data Hiding Using Two Embedding Directions

IEEE Transactions on Multimedia, 2008
Current difference-expansion (DE) embedding techniques perform one layer embedding in a difference image. They do not turn to the next difference image for another layer embedding unless the current difference image has no expandable differences left ...
Yongjian Hu, Heung-Kyu Lee, Jianwei Li   +2 more
exaly   +2 more sources

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Digital Expansions with Respect to Different Bases

Monatshefte f�r Mathematik, 2003
The authors study the distribution and the average of the \(k\)th digit in the base \(g\)-expansion of \(N\), when \(g\) varies in the interval \([2,N']\). They also study the average of the sum of digits in the same framework. Their method consists of fine evaluations of exponential sums and ``\(\psi\)-sums'', where \(\psi\) is the first Bernoulli ...
Drmota, Michael, Schoißengeier, Johannes   +1 more
openaire   +2 more sources

On-shell expansion and different vacua

Physical Review D, 1992
The on-shell expansion of the effective action is applied to connect the different vacuum solutions by using the on-shell quantities only. By this method, one of the vacuum states is represented essentially by the coherent state constructed upon another vacuum.
, Komachiya, , Fukuda
openaire   +2 more sources

Reversible watermarking using prediction and Difference Expansion

2010 2nd European Workshop on Visual Information Processing (EUVIP), 2010
Reversible data hiding deals with the insertion of auxiliary information into a host data without causing any permanent degradation to the original signal. In this paper a novel reversible data hiding scheme, based on the classical Difference Expansion insertion algorithm, is presented.
M. Azzoni, Boato, Giulia, M. Carli, K. Egiazarian   +3 more
openaire   +2 more sources

On the equivalence of different Landau expansions

Physica A: Statistical Mechanics and its Applications, 1989
Abstract The critical behavior of magnetic model systems in the mean-field approximation may be obtained from a standard Landau expansion, in terms of the order parameter m , of the functional ψ ( T , H ; m ) = − Hm + f ( T , m ), where f is the Helmholtz free energy.
C.E.I. Carneiro, V.B. Henriques, S.R. Salinas   +2 more
openaire   +1 more source

Expansion Model Test of Expansive Soil in Different Stress State

Soil Mechanics and Foundation Engineering, 2015
The hydroscopic expansion of expansive soil always leads to engineering safety problems. With mid-expansive soil at Nanyang, the relationship among the expansion ratio caused by total wetting of expansive soil, eventual and initial ratio of water content, and overlying loads was studied.
Bin Huang, Zhan-lin Cheng, Wei Zhang, Xu-dong Fu, Han Xu   +4 more
openaire   +1 more source

On the Coefficients in Finite Difference Series Expansions of Derivatives

SIAM Journal on Numerical Analysis
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Jeffrey W. Banks, William D. Henshaw
openaire   +2 more sources

ASYMPTOTIC EXPANSION FOR DIFFERENCE EQUATIONS WITH INFINITE DELAY

Asian-European Journal of Mathematics, 2009
Using summable dichotomies and Schauder's fixed point theorem, we obtain existence, asymptotic behavior and compactness properties, of convergent solutions for difference equations with infinite delay. Applications on Volterra difference equations with infinite delay are shown.
Cuevas, Claudio, del Campo, Luis
openaire   +2 more sources