Results 61 to 70 of about 2,495,027 (403)
Higher-Order Properties of Analytic Wavelets [PDF]
Lilly, J. M., and S. C. Olhede, (2009). Higher-order properties of
analytic wavelets. IEEE Transactions on Signal Processing, 57 (1), 146--160, 2008 The influence of higher-order wavelet properties on the analytic wavelet transform behavior is investigated, and wavelet functions offering advantageous performance are identified. This is accomplished through detailed investigation of the generalized Morse wavelets, a two-parameter family of exactly analytic continuous wavelets.
arxiv +1 more source
Advanced Engineering Materials, Volume 27, Issue 6, March 2025.ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur +5 more
wiley +1 more source
Applied SciencesWavelet transform is a powerful time-frequency-based analysis method often used in gear fault diagnostics. The development of wavelet transform is closely linked to the improvement of resolution.
Trong-Du Nguyen, Phong-Dien Nguyen
doaj +1 more source
Journal of Finance and Data Science, 2016 Many researchers documented that if stock markets' returns series are significantly skewed, linear-GARCH(1,1) grossly underestimates the forecast values of the returns. However, this study showed that the linear Maximal Overlap Discreet Wavelet Transform
Mohd Tahir Ismail +2 more
doaj +1 more source
The discrete wavelet transform: wedding the a trous and Mallat algorithms
IEEE Transactions on Signal Processing, 1992 Two separately motivated implementations of the wavelet transform are brought together. It is observed that these algorithms are both special cases of a single filter bank structure, the discrete wavelet transform, the behavior of which is governed by ...
M. Shensa
semanticscholar +1 more source
Anomaly Detection Method for Hybrid Workpieces Using Dynamic Time Warping
Advanced Engineering Materials, EarlyView.Monitoring of hybrid workpieces: when machining hybrid workpieces, unavoidable axial deviations of the material transition zone cause temporal shifts in the process force signals. A new anomaly detection method based on dynamic time warping is proposed to detect material defects.
Berend Denkena +3 more
wiley +1 more source
Edge Detection with Hessian Matrix Property Based on Wavelet Transform [PDF]
Journal of Sciences, Islamic Republic of Iran, 2015 In this paper, we present an edge detection method based on wavelet transform and Hessian matrix of image at each pixel. Many methods which based on wavelet transform, use wavelet transform to approximate the gradient of image and detect edges by ...
N. Aghazadeh, Y. Gholizade Atani
doaj
Medical image denoising using dual tree complex thresholding wavelet transform and Wiener filter
Journal of King Saud University: Computer and Information Sciences, 2015 Image denoising is the process to remove the noise from the image naturally corrupted by the noise. The wavelet method is one among various methods for recovering infinite dimensional objects like curves, densities, images, etc.
Hilal Naimi +2 more
doaj +1 more source
Wavelet transforms in a critical interface model for Barkhausen noise
, 2008 We discuss the application of wavelet transforms to a critical interface model, which is known to provide a good description of Barkhausen noise in soft ferromagnets.
A.-L. Barábasi +8 more
core +1 more source
Mechanisms of De‐icing by Surface Rayleigh and Plate Lamb Acoustic Waves
Advanced Engineering Materials, EarlyView.Ice accretion impacts daily life, renewable energy generation, maintenance, and security in industries and aeronautics. Acoustic waves (AW) are a promising method for ice removal, although de‐icing mechanisms require further investigation to optimize energy efficiency.
Shilpi Pandey +15 more
wiley +1 more source