Results 21 to 30 of about 4,173 (187)

Rank-constrained seismic data interpolation and denoising

open access: yesBrazilian Journal of Geophysics, 2022
Rank-constrained seismic data interpolation methods have been used to cope with spatial sampling deficiencies, but some fundamental aspects are often neglected. Understanding their underlying features is the first step for developing new solutions to overcome existing limitations.
Quézia Cavalcante, Milton Porsani
openaire   +1 more source

Denoising of Seismic Data Based on Block Dictionary Learning Theory

open access: yesCT Lilun yu yingyong yanjiu, 2022
With the increasingly complex observation environment of oil and gas exploration, the seismic data collected are often mixed with various noise signals, resulting in the effective weak signal caused by the exploration target is covered, which seriously ...
Junjie ZHOU   +3 more
doaj   +1 more source

Multi-scale interactive network in the application of DAS seismic data processing

open access: yesFrontiers in Earth Science, 2023
Distributed acoustic sensing (DAS) is regarded as a novel acquisition technology for seismic data. Compared with conventional electrical geophones, DAS has a series of obvious advantages including low-cost, high spatial resolution, good coverage, and ...
Hongzhou Wang   +5 more
doaj   +1 more source

A Primal-Dual Proximal Algorithm for Sparse Template-Based Adaptive Filtering: Application to Seismic Multiple Removal [PDF]

open access: yes, 2014
Unveiling meaningful geophysical information from seismic data requires to deal with both random and structured "noises". As their amplitude may be greater than signals of interest (primaries), additional prior information is especially important in ...
Chaux, Caroline   +3 more
core   +6 more sources

Inpainting of Cyclic Data using First and Second Order Differences [PDF]

open access: yes, 2014
Cyclic data arise in various image and signal processing applications such as interferometric synthetic aperture radar, electroencephalogram data analysis, and color image restoration in HSV or LCh spaces.
Bergmann, Ronny, Weinmann, Andreas
core   +1 more source

Hierarchical Bayesian sparse image reconstruction with application to MRFM [PDF]

open access: yes, 2008
This paper presents a hierarchical Bayesian model to reconstruct sparse images when the observations are obtained from linear transformations and corrupted by an additive white Gaussian noise. Our hierarchical Bayes model is well suited to such naturally
Dobigeon, Nicolas   +2 more
core   +8 more sources

Random Noise Suppression Method of Micro-Seismic Data Based on CEEMDAN-FE-TFPF

open access: yesApplied Sciences, 2022
As rock fractures caused by micro-seismic events has potential safety hazards to underground workers, it is often necessary to accurately locate the micro-seismic source for hidden danger investigation.
Jianting Chen   +5 more
doaj   +1 more source

M-estimate robust PCA for seismic noise attenuation [PDF]

open access: yes, 2016
The robust principal component analysis (PCA) method has shown very promising results in seismic ambient noise attenuation when dealing with outliers in the data.
Akhondi-Asl, H, Nelson, JDB
core   +1 more source

Tomographic inversion using $\ell_1$-norm regularization of wavelet coefficients [PDF]

open access: yes, 2006
We propose the use of $\ell_1$ regularization in a wavelet basis for the solution of linearized seismic tomography problems $Am=d$, allowing for the possibility of sharp discontinuities superimposed on a smoothly varying background.
Dahlen, F. A.   +3 more
core   +2 more sources

Random Noise Attenuation Based on Residual Convolutional Neural Network in Seismic Datasets

open access: yesIEEE Access, 2020
Seismic random noise attenuation is a key step in seismic data processing. The random seismic data recorded by the detector tends to have strong noise, and this noisy seismic ratio can be seen as a low signal-to-noise ratio (SNR).
Liuqing Yang   +4 more
doaj   +1 more source

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