Zobrazeno 1 - 10
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pro vyhledávání: '"Can Evren Yarman"'
Autor:
Can Evren Yarman
Publikováno v:
Signal, Image and Video Processing. 17:1661-1667
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e4d00086fb2f0e104e55f9ca0686971
https://doi.org/10.1007/s11760-022-02376-z
https://doi.org/10.1007/s11760-022-02376-z
Autor:
Jonathan Mitchell, Can Evren Yarman
Publikováno v:
Journal of Magnetic Resonance. 301:94-101
We present a nonlinear inversion method for generating sparse solutions to the Fredholm Integral equation describing two-dimensional distributions of nuclear magnetic resonance (NMR) relaxation times or diffusion coefficients. Our greedy variational
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::872b15d9e9793191cbe027e8c463550e
https://doi.org/10.1016/j.jmr.2019.02.009
https://doi.org/10.1016/j.jmr.2019.02.009
Publikováno v:
Inverse Problems. 38:105010
This paper studies ill-posed tomographic imaging problems where the image is sparsely represented by a non-negative linear combination of Gaussians. Our main contribution is to develop a scheme for directly recovering the Gaussian mixture representat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c07ea337662205ad1761a7e4d01dc099
https://doi.org/10.1088/1361-6420/ac8bee
https://doi.org/10.1088/1361-6420/ac8bee
Publikováno v:
Geophysical Prospecting. 66:98-123
Planar waves events recorded in a seismic array can be represented as lines in the Fourier domain. However, in the real world, seismic events usually have curvature or amplitude variability, which means that their Fourier transforms are no longer str
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::960a9dc5d43c472f2ee6e285572f7c9c
https://doi.org/10.1111/1365-2478.12533
https://doi.org/10.1111/1365-2478.12533
Autor:
Gustav Zickert, Can Evren Yarman
We propose a greedy variational method for decomposing a non-negative multivariate signal as a weighted sum of Gaussians, which, borrowing the terminology from statistics, we refer to as a Gaussian mixture model. Notably, our method has the following
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a82241c9e5ea565d9073b4b078d9a288
http://arxiv.org/abs/1909.00367
http://arxiv.org/abs/1909.00367
Autor:
Can Evren, Yarman, Jonathan, Mitchell
Publikováno v:
Journal of magnetic resonance (San Diego, Calif. : 1997). 301
We present a nonlinear inversion method for generating sparse solutions to the Fredholm Integral equation describing two-dimensional distributions of nuclear magnetic resonance (NMR) relaxation times or diffusion coefficients. Our greedy variational
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::d11ad99baf931200cf6784f3aa8342c3
https://pubmed.ncbi.nlm.nih.gov/30861458
https://pubmed.ncbi.nlm.nih.gov/30861458
Publikováno v:
GEOPHYSICS. 81:R147-R155
Traveltime tomography using transmission data has been widely used for static corrections and for obtaining near-surface models for seismic depth imaging. More recently, it is also being used to build initial models for full-waveform inversion. The c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8261e2d636717b40e9fa0fedac79c9de
https://doi.org/10.1190/geo2015-0463.1
https://doi.org/10.1190/geo2015-0463.1
Publikováno v:
GEOPHYSICS. 80:C49-C58
Computation of first-arrival traveltimes for quasi-P waves in the presence of anisotropy is important for high-end near-surface modeling, microseismic-source localization, and fractured-reservoir characterization — and it requires solving an anisot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::301163a5c2b754fe77200b06a4d0c482
https://doi.org/10.1190/geo2014-0375.1
https://doi.org/10.1190/geo2014-0375.1
Autor:
Garret Flagg, Can Evren Yarman
Publikováno v:
Mathematics of Computation. 84:1835-1860
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a833a9455218d036a8a13377e81c261
https://doi.org/10.1090/s0025-5718-2015-02928-7
https://doi.org/10.1090/s0025-5718-2015-02928-7
Autor:
Can Evren Yarman
$R$-limited functions are multivariate generalization of band-limited functions whose Fourier transforms are supported within a compact region $R\subset\mathbb{R}^{n}$. In this work, we generalize sampling and interpolation theorems for band-limited
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::368e2257154b4a1b56a6b4b55db61d02
http://arxiv.org/abs/1709.02086
http://arxiv.org/abs/1709.02086