Results 1 to 10 of about 226,451 (338)

On the Hilbert transform of wavelets [PDF]

open access: yesIEEE Transactions on Signal Processing, 2011
A wavelet is a localized function having a prescribed number of vanishing moments. In this correspondence, we provide precise arguments as to why the Hilbert transform of a wavelet is again a wavelet.
Chaudhury, Kunal Narayan, Unser, Michael
core   +3 more sources

On the Analytic Wavelet Transform [PDF]

open access: yesIEEE Transactions on Information Theory, 2010
An exact and general expression for the analytic wavelet transform of a real-valued signal is constructed, resolving the time-dependent effects of non-negligible amplitude and frequency modulation.
Lilly, Jonathan M., Olhede, Sofia C.
core   +4 more sources

The continuous generalized wavelet transform associated with q-Bessel operator

open access: yesBoletim da Sociedade Paranaense de Matemática, 2022
The continuous generalized wavelet transform associated with -Bessel operator is defined, which will invariably be called continuous -Bessel wavelet transform .
M. M. Dixit   +2 more
doaj   +1 more source

Novel Uncertainty Principles Concerning Linear Canonical Wavelet Transform

open access: yesMathematics, 2022
The linear canonical wavelet transform is a nontrivial generalization of the classical wavelet transform in the context of the linear canonical transform.
Mawardi Bahri   +1 more
doaj   +1 more source

Application of Wavelet Transform to Urysohn-Type Equations

open access: yesMathematics, 2023
This paper deals with convolution-type Urysohn equations of the first kind. Finding a solution for such equations is an ill-posed problem. For it to be solved, regularization algorithms and the continuous wavelet transform are used.
V. Lukianenko, M. Kozlova, V. Belozub
doaj   +1 more source

Sparse-View CT Reconstruction Based on a Hybrid Domain Model with Multi-Level Wavelet Transform

open access: yesSensors, 2022
The reconstruction of sparsely sampled projection data will generate obvious streaking artifacts, resulting in image quality degradation and affecting medical diagnosis results. Wavelet transform can effectively decompose directional components of image,
Jielin Bai, Yitong Liu, Hongwen Yang
doaj   +1 more source

FACE RECOGNITION USING DEEP NEURAL NETWORKS WITH THE COMBINATION OF DISCRETE WAVELET TRANSFORM, STATIONARY WAVELET TRANSFORM, AND DISCRETE COSINE TRANSFORM METHODS

open access: yesJUTI: Jurnal Ilmiah Teknologi Informasi, 2020
Personal identification can be done by using face, fingerprint, palm prints, eye’s retina, or voice recognition which commonly called as biometric methods. Face recognition is the most popular and widely used among those biometric methods. However, there
Afrizal Laksita Akbar   +2 more
doaj   +1 more source

A new hybrid model of sparsity empirical wavelet transform and adaptive dynamic least squares support vector machine for fault diagnosis of gear pump

open access: yesAdvances in Mechanical Engineering, 2020
Gear pump is the key component in hydraulic drive system, and it is very significant to fault diagnosis for gear pump. The combination of sparsity empirical wavelet transform and adaptive dynamic least squares support vector machine is proposed for fault
Yan Lu, Zhiping Huang
doaj   +1 more source

A Review of Wavelet Analysis and Its Applications: Challenges and Opportunities

open access: yesIEEE Access, 2022
As a general and rigid mathematical tool, wavelet theory has found many applications and is constantly developing. This article reviews the development history of wavelet theory, from the construction method to the discussion of wavelet properties.
Tiantian Guo   +5 more
doaj   +1 more source

Wavelets: a powerful tool for studying rotation, activity, and pulsation in Kepler and CoRoT stellar light curves [PDF]

open access: yes, 2014
Aims. The wavelet transform has been used as a powerful tool for treating several problems in astrophysics. In this work, we show that the time-frequency analysis of stellar light curves using the wavelet transform is a practical tool for identifying ...
Bravo, J. P.   +4 more
core   +1 more source

Home - About - Disclaimer - Privacy