Wavelet transform based on inner product in fault diagnosis of rotating machinery: A review
J Chen, Z Li, J Pan, G Chen, Y Zi, J Yuan… - Mechanical systems and …, 2016 - Elsevier
As a significant role in industrial equipment, rotating machinery fault diagnosis (RMFD)
always draws lots of attention for guaranteeing product quality and improving economic …
always draws lots of attention for guaranteeing product quality and improving economic …
Enhancement of signal denoising and multiple fault signatures detecting in rotating machinery using dual-tree complex wavelet transform
Y Wang, Z He, Y Zi - Mechanical Systems and Signal Processing, 2010 - Elsevier
In order to enhance the desired features related to some special type of machine fault, a
technique based on the dual-tree complex wavelet transform (DTCWT) is proposed in this …
technique based on the dual-tree complex wavelet transform (DTCWT) is proposed in this …
A novel intelligent method for mechanical fault diagnosis based on dual-tree complex wavelet packet transform and multiple classifier fusion
J Qu, Z Zhang, T Gong - Neurocomputing, 2016 - Elsevier
Identifying fault categories, especially for compound faults, is a challenging task in
mechanical fault diagnosis. For this task, this paper proposes a novel intelligent method …
mechanical fault diagnosis. For this task, this paper proposes a novel intelligent method …
A variational approach to degraded document enhancement
RF Moghaddam, M Cheriet - IEEE transactions on pattern …, 2009 - ieeexplore.ieee.org
The goal of this paper is to correct bleed-through in degraded documents using a variational
approach. The variational model is adapted using an estimated background according to the …
approach. The variational model is adapted using an estimated background according to the …
A novel aging state recognition method of a viscoelastic sandwich structure based on permutation entropy of dual-tree complex wavelet packet transform and …
J Qu, C Shi, F Ding, W Wang - Structural Health Monitoring, 2020 - journals.sagepub.com
A viscoelastic sandwich structure is widely used in mechanical equipment, but therein
viscoelastic layers inevitably suffer from aging which changes the dynamic characteristics of …
viscoelastic layers inevitably suffer from aging which changes the dynamic characteristics of …
Discrete wavelet transforms in the large time-frequency analysis toolbox for MATLAB/GNU octave
The discrete wavelet transform module is a recent addition to the Large Time-Frequency
Analysis Toolbox (LTFAT). It provides implementations of various generalizations of Mallat's …
Analysis Toolbox (LTFAT). It provides implementations of various generalizations of Mallat's …
A new class of almost symmetric orthogonal Hilbert pair of wavelets
S Murugesan, DBH Tay - Signal processing, 2014 - Elsevier
The dual-tree complex wavelet transform offers near shift invariance and a better directional
selectivity compared to traditional discrete wavelet transforms. A new class of Hilbert-pair of …
selectivity compared to traditional discrete wavelet transforms. A new class of Hilbert-pair of …
[PDF][PDF] Denoising of medical ultrasound images using spatial filtering and multiscale transforms
VNP Raj, T Venkateswarlu - International Journal of Computer …, 2012 - academia.edu
Medical imaging became the integral part in health care where all the critical diagnosis such
as blocks in the veins, plaques in the carotid arteries, minute fractures in the bones, blood …
as blocks in the veins, plaques in the carotid arteries, minute fractures in the bones, blood …
A new approach to the common-factor design technique for Hilbert-pair of wavelets
DBH Tay - IEEE Signal Processing Letters, 2010 - ieeexplore.ieee.org
A Hilbert-Pair consists of a pair of filter banks whose corresponding wavelets are Hilbert
transforms of each other. Selesnick proposed the simple common-factor technique for its …
transforms of each other. Selesnick proposed the simple common-factor technique for its …
A globally optimal bilinear programming approach to the design of approximate Hilbert pairs of orthonormal wavelet bases
J Wang, JQ Zhang - IEEE transactions on signal processing, 2009 - ieeexplore.ieee.org
It is understood that the Hilbert transform pairs of orthonormal wavelet bases can only be
realized approximately by the scaling filters of conjugate quadrature filter (CQF) banks. In …
realized approximately by the scaling filters of conjugate quadrature filter (CQF) banks. In …