نتایج جستجو برای: wavelet analysis

تعداد نتایج: 2844670  

2007
Vuong Le

The project focuses on applying the continuous complex Morlet wavelet transform to analyzing the phase shift data of a HeLa cell sample obtained by the Fourier phase microscopy technique. The result of the analysis shows that there is some rhythmic processes happened steadily at some certain frequencies over periods of time. They are supposed to be related to some characteristics of the cell an...

2013
Kusum Rani Reecha Sharma

Image fusion is processes of combining complementary information from a set of input images. The resultant fused image give large and reliable information. In this paper we study about Discrete wavelet and Discrete Multiwavelet and there use in image fusion. Discrete wavelet transform (DWT) technique is used for multi Resolution fusion. Multi Resolution fusion uses wavelet transform at multi sc...

2013
Kusum Rani Reecha Sharma

Image fusion is a technique that integrate complimentary details from multiple input images such that the new image give more information and more suitable for the purpose of human visual perception. This paper presents a review on some of the image fusion techniques (simple average, simple minimum, simple maximum, PCA, DWT). Comparison of all the techniques concludes the better approach for it...

2007
Bruno Torrésani

We describe several aspects of wavelet analysis and more general methods of time-frequency analysis, emphasizing applications to signal analysis and processing problems.

2008
Jonathan M. Lilly

Properties determining optimal behavior of continuous analytic wavelet functions are investigated, and wavelet functions nearly obtaining such behavior are identified. This is accomplished through detailed investigation of the generalized Morse wavelets, a highly flexible family of exactly analytic continuous wavelets. The degree of time/frequency localization, the existence of a unique interpr...

2010
Christopher Liner

The continuous wavelet transform utilizing a complex Morlet analyzing wavelet has a close connection to the Fourier transform and is a powerful analysis tool for decomposing broadband wavefield data. A wide range of seismic wavelet applications have been reported over the last three decades, and the free Seismic Unix processing system now contains a code (succwt) based on the work reported here.

2011
Clara Cruz Ramos Rogelio Reyes Reyes Mariko Nakano Miyatake Héctor Manuel Pérez Meana

2012
Xiaohong Zhong Jianxun He

In this article, we introduce a kind of unitary operator U associated with the involution on the Heisenberg group, invariant closed subspaces are identified with the characterization spaces of sub-Laplacian operators. In the sense of vector-valued functions, we study the theory of continuous wavelet transform. Also, we obtain a new inversion formula of Radon transform on the Heisenberg group Hn.

2014
KARANPREET KAUR ANKUSH KANSAL Sanjay Sharma Karanpreet Kaur

2013
S.M.H. Hosseini U. Gabbert

The present study provides a concise description of wave propagation in cellular sandwich panels. A novel approach of damage detection based on mode conversion is proposed which can be useful for detecting relatively small damages in cellular sandwich structures using high frequency guided waves. The new methodology applies the continuous wavelet transform (CWT) and the cosine formula to extrac...

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