Results 71 to 80 of about 4,861 (197)

Green communication systems via a wavefront multiplexing technique

Systems Engineering, Volume 28, Issue 1, Page 5-14, January 2025.
Abstract A green communication scheme using an orthogonal wavefront (WF) multiplexing (Muxing) scheme spatially combined with orthogonal frequency‐division multiplexing (OFDM) techniques is proposed. It forms a spatial WF OFDM transceiver. The WF Muxing technique serves as the preprocessing and postprocessing method of the WF OFDM transceiver.
Hen‐Geul Yeh, Joe Lee
wiley   +1 more source

Comparison between Different Data Image Compression Techniques Applied on SAR Images

Iraqi Journal of Physics, 2008
In this paper, image compression technique is presented based on the Zonal transform method. The DCT, Walsh, and Hadamard transform techniques are also implements. These different transforms are applied on SAR images using Different block size.
Eanas Y. Al-Tae’e
doaj  

Quantum Simulation Logic, Oracles, and the Quantum Advantage

, 2019
Query complexity is a common tool for comparing quantum and classical computation, and it has produced many examples of how quantum algorithms differ from classical ones.
Johansson, Niklas, Larsson, Jan-Åke
core   +1 more source

An efficient no‐reference image quality analysis based on statistical perceptual features

IET Image Processing, Volume 19, Issue 1, January/December 2025.
1. A novel and efficient feature‐based no‐reference image quality assessment (NR‐IQA) focus measure is proposed. 2. It is based on the statistical structural and texture features of the image. 3. The logarithmic entropy‐based focus measure shows promising results as compared to the existing techniques. Abstract It is well known that image quality needs
B. N. Al Sameera, Vilas H. Gaidhane
wiley   +1 more source

Remarks on numerical approximation of Volterra integral equations by Walsh–Hadamard transform

Results in Applied Mathematics
Walsh functions form a piecewise-constant orthonormal basis that is particularly well-suited for digital computation and signal approximation. Nevertheless, the direct evaluation of Walsh transforms for discrete functions becomes computationally ...
Farrukh Mukhamedov, Ushangi Goginava, Akaki Goginava, James Wheeldon   +3 more
doaj   +1 more source

Super sub-Nyquist single-pixel imaging by means of cake-cutting Hadamard basis sort

, 2019
Single-pixel imaging via compressed sensing can reconstruct high-quality images from a few linear random measurements of an object/scene known a priori to be sparse or compressive, by using a point/bucket detector without spatial resolution. Nevertheless,
Yu, Wen-Kai
core   +1 more source

NoLIEM: A Novel Lightweight Image Encryption Method for Resource‐Constrained IoT Devices

IET Information Security, Volume 2025, Issue 1, 2025.
The expanded use of Internet of Things (IoT) devices in smart homes, industrial automation, healthcare, and smart cities has increased the risk of unauthorized access, data breaches, and man‐in‐the‐middle attacks. Traditional encryption methods like AES and RSA are too energy‐ and processing‐intensive for IoT devices.
Athraa J. H. Witwit, Ahmed Fanfakh, Ali Kadhum Idrees, Stelvio Cimato   +3 more
wiley   +1 more source

FINGERPRINT VERIFICATION IN PERSONAL IDENTIFICATION BY APPLYING LOCAL WALSH HADAMARD TRANSFORM AND GABOR COEFFICIENTS

ICTACT Journal on Image and Video Processing, 2017
In an era of advanced computer technology world where innumerable services such as access to bank accounts, or access to secured data or entry to some national important organizations require authentication of genuine individual.
K N Pushpalatha, Arvind Kumar Gautam
doaj   +1 more source

QROP: Quantum Learning‐Based Identification of Retinopathy of Prematurity

IET Quantum Communication, Volume 6, Issue 1, January/December 2025.
This work aims to classify normal and ROP‐affected retinal images using a quantum neural network (QNN). The proposed system uses the HVDROPDB (2023) dataset fundus images of preterm infants. The proposed system achieves 97.06% accuracy with the HVDROPDB Neo dataset, 91.18% accuracy with the HVDROPDB RetCam dataset, and 85.29% accuracy when evaluated on
Debashis De, Mahua Nandy Pal, Dipankar Hazra   +2 more
wiley   +1 more source

An Adaptive Simplified Travelling Wave‐Based Fault Detection, Classification and Location Estimation Strategy for Series Compensated Transmission Lines

IET Smart Grid, Volume 8, Issue 1, January/December 2025.
This paper proposes an integrated model for fault detection, classification, and location in power transmission systems using voltage signals from a single terminal of a series‐compensated line. Simulations show the model achieves 100% accuracy for fault detection, classification and faulty segment identification, and 99.79% accuracy for fault location
Ehsan Akbari, Milad Samady Shadlu
wiley   +1 more source