Results 291 to 300 of about 512,361 (324)

Walsh Functions and Gray Code

IEEE Transactions on Electromagnetic Compatibility, 1971
Gray code is a natural way of ordering binary vectors in dyadic space, hence it appears frequently in connetion with Walsh functions. In Paley's definition of Walsh functions their sequencies are arranged in Gray code. Gray code also appears in a new Walsh function generation algorithm which obtains a function by locating all its sign changes.
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Walsh Functions and Their Generalizations

1991
Consider the function defined on the half open unit interval [0, 1) by $${{r}_{0}}(x) = \left\{ {\begin{array}{*{20}{c}} 1 & {for x \in [0, 1/2),} \\ { - 1} & {for x \in [1/2,1).} \\ \end{array} } \right.$$ Extend it to the real line by priodicity of period 1 and set r k (x) = r0(2 k x)for k = 0,1, … and real x.
B. Golubov, A. Efimov, V. Skvortsov
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Function Generation by Walsh Functions

IETE Journal of Research, 1973
S. S. R. Murthy, P. S. Ramakrishna
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Enhancing Tool Wear Prediction Accuracy Using Walsh–Hadamard Transform, DCGAN and Dragonfly Algorithm-Based Feature Selection

Sensors, 2023

exaly  

Walsh Functions

2017
Lakshminarayan Hazra, Pubali Mukherjee
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Measuring Family Resilience: Evaluating the Walsh Family Resilience Questionnaire

Family Journal, 2021
James Michael Duncan
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Detection of Focal and Non-Focal Electroencephalogram Signals Using Fast Walsh-Hadamard Transform and Artificial Neural Network

Sensors, 2020
Prasanna J, Mazin Abed Mohammed, Mashael S Maashi   +2 more
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An audio encryption scheme based on Fast Walsh Hadamard Transform and mixed chaotic keystreams

Applied Computing and Informatics, 2023
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Walsh–Hadamard Transform Kernel-Based Feature Vector for Shot Boundary Detection

IEEE Transactions on Image Processing, 2014
Lakshmi Priya G G
exaly  

A chaotic colour image encryption scheme combining Walsh–Hadamard transform and Arnold–Tent maps

Journal of Ambient Intelligence and Humanized Computing, 2019
Syam Sankar, Ashok S Kumar
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