Results 11 to 20 of about 40,666 (260)

Empirical Wavelet Transform

open access: yesIEEE Transactions on Signal Processing, 2013
Some recent methods, like the Empirical Mode Decomposition (EMD), propose to decompose a signal accordingly to its contained information. Even though its adaptability seems useful for many applications, the main issue with this approach is its lack of theory. This paper presents a new approach to build adaptive wavelets. The main idea is to extract the
Jerome Gilles
openaire   +5 more sources

Multi-focus Image Fusion Based on Non-subsampled Discrete Wavelet Transform

open access: yesJournal of Harbin University of Science and Technology, 2018
Image fusion is widely used in military,medical and other fields. Image fusion technology is to use a specific algorithm to synthesize two or more images into a new image.
GUO Ling-xin, YUAN Li-ying, WANG Fei-yue
doaj   +1 more source

Optimal decomposition level of discrete, stationary and dual tree complex wavelet transform for pixel based fusion of multi-focused images [PDF]

open access: yesSerbian Journal of Electrical Engineering, 2010
The fast development of digital image processing leads to the growth of feature extraction of images which leads to the development of Image fusion. The process of combining two different images into a new single image by retaining salient features from ...
Kannan Kanagaraj   +2 more
doaj   +1 more source

Discrete Wavelet Transform [PDF]

open access: yes, 1998
In general, discrete wavelet transforms are generated by samplings (in the time-scale plane) of a rorn sponding continuous wavelet transform.
openaire   +1 more source

The Reproducing Kernel Function for the Image Space of a Limited Spectrum Wavelet Transform

open access: yesJournal of Harbin University of Science and Technology, 2017
In order to describe the nature of image space of the wavelet transform and a limited spectrum and decay faster wavelet,this paper uses Shannon scaling function to construct a wavelet function,take advantage of wavelet analysis theory to give the nature ...
DENG Cai-xia, HE Peng, CHEN Xia-xia
doaj   +1 more source

Non-decimated Wavelet Transform for a Shift-invariant Analysis

open access: yesTrends in Computational and Applied Mathematics, 2018
Due to the ability of time-frequency location, the wavelet transform has been applied in several areas of research involving signal analysis and processing, often replacing the conventional Fourier transform.
Gabriela de Oliveira Nascimento Brassarote   +2 more
doaj   +1 more source

Norm Retrievable Wavelet Systems [PDF]

open access: yesSahand Communications in Mathematical Analysis
This paper focuses on the norm retrieval problem for wavelet transform. The wavelet transform associated with an admissible wavelet is norm retrieval. However, this problem is difficult in special cases, i.e., for wavelet systems. We give some results of
Mahdieh sadat Aghaei   +1 more
doaj   +1 more source

True 2-D 5/3 wavelet transform and its application for CT image lossless compression

open access: yesDianxin kexue, 2016
Wavelet transform is widely used in the field of digital image processing,and it usually processes image by separating the row and column,which can’t meet the human visual system(HVS)completely.To address this situation,a kind of true 2-D 5/3 wavelet ...
Nini XU, Mingming ZHANG, Jianming WANG
doaj   +2 more sources

Gabor Wavelet Transform in Image Compression

open access: yesJournal of Kufa for Mathematics and Computer, 2012
In the present paper, an important mathematical transform which is called Gabor transform be used to develop a method for image compression. Gabor transform is a type of wavelet-based transform.
Ali Hassan Al-Fayadh   +2 more
doaj   +1 more source

dUTPase is essential in zebrafish development and possesses several single‐nucleotide variants with pronounced structural and functional consequences

open access: yesFEBS Open Bio, EarlyView.
dUTPases are involved in balancing the appropriate nucleotide pools. We showed that dUTPase is essential for normal development in zebrafish. The different zebrafish genomes contain several single‐nucleotide variations (SNPs) of the dut gene. One of the dUTPase variants displayed drastically lower protein stability and catalytic efficiency as compared ...
Viktória Perey‐Simon   +6 more
wiley   +1 more source

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