Results 31 to 40 of about 28,052 (308)

The Time-Scale Interactions between Stock Price and Exchange Rate Volatility in Tehran Stock Exchange [PDF]

open access: yesراهبرد مدیریت مالی, 2018
The purpose of this study was to investigate the relationship between Tehran stock exchange price index and exchange rate changes using the time-scale approach.
ramin khochiany
doaj   +1 more source

Multiresolution analysis using wavelet, ridgelet, and curvelet transforms for medical image segmentation [PDF]

open access: yes, 2011
Copyright @ 2011 Shadi AlZubi et al. This article has been made available through the Brunel Open Access Publishing Fund.The experimental study presented in this paper is aimed at the development of an automatic image segmentation system for classifying ...
Alzubi, S   +5 more
core   +1 more source

Decay properties of the discrete wavelet transform in n dimensions with independent dilation parameters

open access: yesJournal of Inequalities and Applications, 2016
The purpose of this paper is to study the decay properties of the discrete wavelet transform with n independent dilation parameters for functions f in L 2 ( R n ) $L^{2}({ {\mathbb {R}}}^{n})$ and a relationship with its continuity. The method we used to
Jaime Navarro, Oscar Herrera
doaj   +1 more source

Multiresolution-based image fusion with additive wavelet decomposition [PDF]

open access: yes, 1999
The standard data fusion methods may not be satisfactory to merge a high-resolution panchromatic image and a low-resolution multispectral image because they can distort the spectral characteristics of the multispectral data.
Fors Aldrich, Octavi   +8 more
core   +1 more source

Implementation of Discrete Fourier Transform And Orthogonal Discrete Wavelet Transform In Python

open access: yesJISR on Computing, 2016
This paper presents implementation of Discrete Fourier Transform and Orthogonal Discrete Wavelet Transform in Python computer programming language. The Fourier Transform is a fundamental signal processing tool whereas the Wavelet Transform is a powerful
Tariq Javid Ali   +4 more
doaj   +1 more source

Non-Blind Watermarking Menggunakan Discrete dan Wavelet Transform

open access: yesJurnal Masyarakat Informatika, 2022
Pada zaman sekarang orang mudah untuk mengakses internet sehingga semua orang dapat memperoleh suatu karya seni digital seperti gambar dengan mudah, kemudian seseorang dapat memodifikasi dan menyebarkan kembali karya tersebut tanpa izin atau tanpa ...
Daurat Sinaga, Cahaya Jatmoko
doaj   +1 more source

Continuous and Discrete Wavelet Transforms Associated with Hermite Transform

open access: yesInternational Journal of Analysis and Applications, 2020
In this paper, we accomplished the concept of continuous and discrete Hermite wavelet transforms. We also discussed some basic properties of Hermite wavelet transform.
C. P. Pandey, Pranami Phukan
doaj  

Lifting wavelet algorithm for freeform surface filtering using a Gaussian prediction operator [PDF]

open access: yes, 2013
The aim of the paper is to investigate a novel lifting wavelet algorithm based on a Gaussian prediction operator to filter freeform surfaces represented by 3D triangular meshes.
Abdul-Rahman, Hussein S.   +2 more
core   +1 more source

A new discrete wavelet transform using variable band filters (Fetal ECG extraction using new discrete wavelet transform)

open access: yesNihon Kikai Gakkai ronbunshu, 2015
In this study, in order to verify the effectiveness of the variable-band-filters discrete wavelet transform (VBF-DWT) and construction method of the variable band filter (VBF), a fetal ECG extraction has been carried out and the main results obtained are
Zhong ZHANG   +4 more
doaj   +1 more source

The De-Noising of Sonic Echo Test Data through Wavelet Transform Reconstruction

open access: yesShock and Vibration, 1999
This paper presents the results of feasibility study into the application of the wavelet transform signal processing method to sonic based non-destructive testing techniques.
J.N. Watson, P.S. Addison, A. Sibbald
doaj   +1 more source

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