Results 71 to 80 of about 1,251 (171)

Enhanced secure lossless image steganography using invertible neural networks

Journal of King Saud University: Computer and Information Sciences
Image steganography is a technique that embeds secret data into cover images in an imperceptible manner, ensuring that the original data can be recovered by the receiver without arousing suspicion.
Weida Chen, Weizhe Chen
doaj   +1 more source

Protection of Health Imagery by Region Based Lossless Reversible Watermarking Scheme

The Scientific World Journal, 2015
Providing authentication and integrity in medical images is a problem and this work proposes a new blind fragile region based lossless reversible watermarking technique to improve trustworthiness of medical images.
R. Lakshmi Priya, V. Sadasivam
doaj   +1 more source

Stokes‐Based 3D Polarimetric Analysis of Dipolar Near‐Fields

Advanced Photonics Research, Volume 7, Issue 8, August 2026.
Characterizing the near‐field polarization of dipolar emitters is of growing importance in nanophotonics, since many subwavelength systems resemble their emission. In this work, we apply the 3D Stokes formalism and its intrinsic reference frame to analyze the polarization properties of various dipole emitters from the near‐ to the far‐field, allowing a
Guillermo Serrera, Yael Gutiérrez, José J. Gil, Fernando Moreno   +3 more
wiley   +1 more source

Energy-efficient algorithms for lossless data compression schemes in wireless sensor networks

Scientific African
Wireless sensor networks (WSNs) are reliant on limited power resources, primarily provided by small batteries within sensor nodes. Inefficient energy management within these networks can lead to premature battery depletion during data transmission ...
Lucia K. Ketshabetswe, Adamu Murtala Zungeru, Caspar K. Lebekwe, Bokani Mtengi   +3 more
doaj   +1 more source

Advances in Position‐Momentum Entanglement: A Versatile Tool for Quantum Technologies

Laser &Photonics Reviews, Volume 20, Issue 15, 7 August 2026.
Position–momentum entanglement constitutes a high‐dimensional continuous‐variable resource in quantum optics. Recent advances in its generation, characterization, and control are reviewed, with emphasis on spontaneous parametric down‐conversion and modern measurement techniques.
Satyajeet Patil, Rajshree Swarnkar, Jonas L. Moos, Sebastian Töpfer, Sergio Tovar‐Pérez, Jorge Fuenzalida, Markus Gräfe   +6 more
wiley   +1 more source

A Matrix‐Free, Scalable, and Robust Implicit Material Point Method

International Journal for Numerical Methods in Engineering, Volume 127, Issue 14, 30 July 2026.
ABSTRACT An implicit material point method is presented using a new dynamic relaxation solver, allowing for a simple and efficient quasi‐static formulation that may be readily implemented in existing explicit‐dynamic codes. The use of dynamic relaxation and aggregation is shown to produce an extremely robust material point method scheme, with good ...
Sam J. V. Sutcliffe, William M. Coombs, Wangcheng Zhang, Ravindra Duddu, Giuliano Pretti, Charles E. Augarde   +5 more
wiley   +1 more source

A New High Capacity Separable Reversible Data Hiding in Encrypted Images Based on Block Selection and Block-Level Encryption

IEEE Access, 2019
Reversible data hiding in encrypted image (RDHEI) is a technology that can simultaneously implement privacy protection and reversible information hiding. For RDHEI, the main problem is the conflict between embedding capacity and real reversibility.
Yaomin Wang, Zhanchuan Cai, Wenguang He
doaj   +1 more source

Novel High Step-Up DC–DC Converter with Three-Winding-Coupled-Inductors and Its Derivatives for a Distributed Generation System

Energies, 2018
A novel step-up DC-DC converter with a three-winding-coupled-inductor which integrates a coupled-inductor and voltage-boost techniques for a distributed generation system is proposed in this paper.
Yanying Gao, Hongchen Liu, Jian Ai
doaj   +1 more source

Lossless Recovery of Multiple Decryption Capability and Progressive Visual Secret Sharing

International Journal of Grid and Distributed Computing, 2016
In order to solve the problem of non-restoration of PVSS, in this paper, we propose a method to recover the secret image without using the Boolean operation of the matrix matrix. In the lossless recovery process, each column base matrix will be "and" and "exclusive or" operation to get the original image anti-color image, and then the image can be ...
openaire   +1 more source

FlowCrypt: Flow-Based Lightweight Encryption with Near-Lossless Recovery for Cloud Photo Privacy

CoRR
The widespread adoption of smartphone photography has led users to increasingly rely on cloud storage for personal photo archiving and sharing, raising critical privacy concerns. Existing deep learning-based image encryption schemes, typically built upon CNNs or GANs, often depend on traditional cryptographic algorithms and lack inherent architectural ...
Xiaohui Yang, Ping Ping, Feng Xu 0008
openaire   +2 more sources