Results 101 to 110 of about 44,439 (311)

Novel Scheme for Hiding Data Using Multiple Codebooks

, 2009
[[abstract]]This paper presents a data-hiding scheme, which hides the secret data in VQ compressed images using multiple codebooks. The secret data are hidden in the codebook indices after the VQ image compression is completed.
Yu, Y. H. ; Chang, C. C. ; Hu, Y. C.
core  

Unified Analytical Framework for Understanding the Operational Stability of Blue Phosphorescent OLEDs: Quantitative Insights Into Exciton Recycling and Bimolecular Interactions

Advanced Functional Materials, EarlyView.
Blue phosphorescent OLEDs remain limited by poor operational stability. Here, a unified analytical framework integrating transient photoluminescence and magneto‐electroluminescence is developed to correlate intrinsic material photophysics with electrically driven degradation.
Hakjun Lee, Bum June Park, Taekyung Kim
wiley   +1 more source

High Capacity Data Hiding for Grayscale Images

, 2010
[[abstract]]High embedding capacity and low image distortion factors are main concerns of information hiding researchers. No scheme can achieve these two factors simultaneously.
Chang; Chin-Chen; Chou; Yung-Chen ; Kieu; The Duc
core  

Thermally Pre‐Formed Reconfigurable Resistive Random‐Access Memory Crossbar Arrays: A Dual‐Mode Platform for Robust Physically Unclonable Functions and In‐Memory Computing

Advanced Functional Materials, EarlyView.
A reconfigurable RRAM platform utilizing thermally pre‐formed filaments (TPFs) is developed to realize robust hardware security. By exploiting the thermodynamic stochasticity of TPFs, exceptionally reliable physically unclonable functions (PUFs) are achieved.
Seongbin Kwon, Taewon Lee, Dohyeong Kim, Sungmin Hwang, Sungjoon Kim   +4 more
wiley   +1 more source

A New Robust Data Hiding Method in Digital Image based on Pelican Optimization Algorithm

Tikrit Journal of Pure Science
Sharing and exchanging data over networks is often insecure, especially if the data is secret and important. Steganography is key research fields in information hiding, focusing on invisible communication and digital steganography, which offers private,
Ebtehal Talib
doaj   +1 more source

High Capacity Data Hiding for Grayscale Images

, 2009
[[abstract]]High embedding capacity and low image distortion factors are main concerns of information hiding researchers. No scheme can achieve these two factors simultaneously.
Chang, C. C.;Chou, Y. C.;Kieu, T. D.
core  

Is It Real Type‐II or S‐Scheme? A Three‐Phase Diagnostic Protocol for Identifying Potentially Mislabeled Heterojunction Photocatalysts

Advanced Functional Materials, EarlyView.
Diagnostic analysis via the heterojunction validation funnel. The funnel illustrates the hierarchical stratification of 30 reported Type‐II systems based on the three‐phase, seven‐step diagnostic framework. Complete validation through all phases is achieved by only 3.3% of systems, while 96.7% lack full mechanistic validation, revealing a pervasive ...
Ki‐Hyun Kim
wiley   +1 more source

Steganography-based secret and reliable communications: Improving steganographic capacity and imperceptibility

, 2010
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.Unlike encryption, steganography hides the very existence of secret information rather than hiding its meaning only.
Al-Mohammad, Adel
core  

Translational Considerations for Injectable Biomaterials and Bioscaffolds to Repair and Regenerate Brain Tissue

Advanced Healthcare Materials, EarlyView.
The repair and regeneration of brain tissue faces both biological and technical challenges. Injectable bioscaffolds offer new opportunities to stimulate tissue regrowth in the brain by recruiting neural stem cells. Here, the translational issues are reviewed that need to be address to advance this promising new therapeutic approach from the bench to ...
Michel Modo, Alena Kisel
wiley   +1 more source

Methods of Stegoanalysis

Безопасность информационных технологий, 2010
In this paper we consider two different approaches to the methods stegoanalysis applicable to common multimedia formats. The first approach uses the verification and the analysis of changes in the fields of media files that must remain constant ...
A. S. Borsch
doaj