Results 71 to 80 of about 978,152 (207)

Optimized Fast Walsh–Hadamard Transform on GPUs for non-binary LDPC decoding

, 2014
The Fourier Transform Sum-Product Algorithm (FT-SPA) used in non-binary Low-Density Parity-Check (LDPC) decoding makes extensive use of the Walsh–Hadamard Transform (WHT).
Andrade, Joao, Silva, Vitor, Falcao, Gabriel   +2 more
core   +1 more source

Walsh - Hadamard Transformation of a Convolution

Radioengineering, 2002
A convolution is mathematical operation used in signal processing,in the homomorphous signal processing and digital image processing(e.g. image interpolation). In regard of computational complexity ofthe convolution in the time domain, it used to calculate in the otherdomain. Exp. x(n) * h(n) R X(W) × H(W), resp.
Usakova, A., Kotuliakova, J., Zajac, M.
openaire   +2 more sources

The incremental progression from fixed to random factors in the analysis of variance: a new synthesis

Australian &New Zealand Journal of Statistics, Volume 67, Issue 1, Page 3-30, March 2025.
Summary Classically, the distinction between a fixed versus a random factor in analysis of variance has been considered a binary choice. Here we consider that any given factor can also occur along an incremental series of steps between these two extremes, depending on the sampling fraction of its levels from the wider population.
Marti J. Anderson, Ray N. Gorley, Antonio Terlizzi   +2 more
wiley   +1 more source

A Blind Video Copyright Protection Technique in Maximum and Minimum Energy Frames Based on The Fast Walsh Hadamard Transform (FWHT) and Discrete Wavelet Transform (DWT) and Arnold Map [PDF]

, 2022
Video copyright protection is the most generally acknowledged method of preventing data piracy. This paper proposes a blind video copyright protection technique based on the Fast Walsh Hadamard Transform (FWHT), Discrete Wavelet Transform (DWT), and ...
Laftah, Muna M., Resen, Mohammed S.
core  

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

Sketched and Truncated Polynomial Krylov Methods: Evaluation of Matrix Functions

Numerical Linear Algebra with Applications, Volume 32, Issue 1, February 2025.
ABSTRACT Among randomized numerical linear algebra strategies, so‐called sketching procedures are emerging as effective reduction means to accelerate the computation of Krylov subspace methods for, for example, the solution of linear systems, eigenvalue computations, and the approximation of matrix functions.
Davide Palitta, Marcel Schweitzer, Valeria Simoncini   +2 more
wiley   +1 more source

Single Pixel Imaging Based on Bicubic Interpolation Walsh Transform Matrix

IEEE Access
Single pixel imaging is a new method, but imaging quality and speed are the main factors affecting its practicality. Building upon the attributes of the random measurement and deterministic matrices, a Walsh transformation matrix with bicubic ...
Wenying Zhang, Shanshan Jia, Haoran Zhu
doaj   +1 more source

Trotterless Simulation of Open Quantum Systems for NISQ Quantum Devices

Advanced Quantum Technologies, Volume 8, Issue 1, January 2025.
Open quantum systems exhibit complex dynamics that can be simulated on quantum computers to provide physical insights into their behavior. This work proposes a new method for simulating these systems that reduces the effect of noise and errors on modern quantum hardware.
Colin Burdine, Enrique P. Blair
wiley   +1 more source

Semi-automated bed boundary detection and log alignment using fast Walsh–Hadamard transform

Frontiers in Earth Science
Depth mismatches between well logs acquired in different runs (e.g., electrical wireline logging (EWL) versus logging while drilling (LWD)) impede stratigraphic correlation and bias reservoir property estimation.
Sushil Acharya, Karl Fabian, Anis Yazidi, Kjetil Westeng   +3 more
doaj   +1 more source

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