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The AAPG/Datapages Combined Publications Database
Showing 5,187 Results. Searched 200,293 documents.
Robust reconstruction via orthogonal matching pursuit with Fourier operators
Ji Li, Mauricio D. Sacchi
International Meeting for Applied Geoscience and Energy (IMAGE)
... data processing literature and include Minimum Weighted Norm Interpolation (MWNI) (Liu and Sacchi, 2004), Antileakage Fourier Transform (ALFT) (Xu et al...
2022
Abstracts: Evaluation of a New 5D Seismic Volume Reconstruction Method: Tensor Completion versus Fourier Reconstruction; #90173 (2015)
Nadia Kreimer and Mauricio D. Sacchi
Search and Discovery.com
.... The operator indicates the 4D inverse Fourier transform. The cost function (3) is minimized using Iterative Reweighted Least-squares (IRLS) following...
2015
Spatial Analysis of Basement and Cover Linears by Optical Diffraction - Methods, Results, and Interpretation
Howard J. Pincus, Thomas W. Doe
Utah Geological Association
... Fourier amplitude transform of the input image. This transform is a graph of the distribution of orientations and spatial frequencies of the elements...
1974
Seismic applications of the Radon transform and a new second-order traveltime local transform
Ehsan Soleymani, Mauricio Sacchi
International Meeting for Applied Geoscience and Energy (IMAGE)
... deconvolution. Initial efforts posed the Radon transform computation as an inverse problem in the ω − x domain. The latter is the classical approach...
2024
Abstract: Land Seismic Noise Suppression: Tough Challenge, Intelligent Implementation, by Khalid Al-Rufaii and Weihong Zhu; #90077 (2008)
Search and Discovery.com
2008
Gabor Depth Migration using a New Adaptive Partitioning Algorithm
Yongwang Ma
Search and Discovery.com
... and the inverse Gabor transform gives the extrapolated wavefield at the new depth. Since each spatial window requires a separate Fourier transform...
Unknown
Gabor Depth Migration using a New Adaptive Partitioning Algorithm
Yongwang Ma
Search and Discovery.com
... and the inverse Gabor transform gives the extrapolated wavefield at the new depth. Since each spatial window requires a separate Fourier transform...
Unknown
Efficient subsurface carbon storage modeling with Fourier neural operator
Suraj Pawar, Pandu Devarakota, Faruk O. Alpak, Jeroen Snippe, Detlef Hohl
International Meeting for Applied Geoscience and Energy (IMAGE)
..., the Fourier layer can be written as follows: ℱ ℛ ∙ ℱ(𝑧 ) , where ℱ is the Fast Fourier Transform (FFT) and is applied each channel...
2023
Abstracts: A New f-p Domain Weighting Function in Minimum Weighted Norm Interpolation of Seismic Data; #90173 (2015)
Zhengsheng Yao, Mike Galbraith, and Randy Kolesar
Search and Discovery.com
... to the other by some transform – e.g. a double Fourier Transform). In this paper, we will describe the f-p domain approach and show its advantages over...
2015
Abstracts: The Conventional and Non-conventional Seismic Differencing; #90173 (2015)
Vanja Vracar and Robert J. Ferguson
Search and Discovery.com
..., t, and distance, d, domain are converted to frequency, f , and wavenumber, , domain invoking Fast Fourier Transform (FFT) and Inverse Fast Fourier Transform...
2015
Simultaneous source acquisition, accuracy, and deblending
Ray Abma
International Meeting for Applied Geoscience and Energy (IMAGE)
..., and when the inverse Fourier transform is applied, an estimate of the signal is obtained. This estimate of the signal is used to remove both...
2024
Abstracts: Accurate Declipping Hybrid Algorithm for Ground Penetrating Radar Data; #90173 (2015)
Akshay Gulati and R. J. Ferguson
Search and Discovery.com
... it finally converges to a solution. NFFT and F-1 represents non uniform fast Fourier transform and inverse fast Fourier transform which operates...
2015
Ultrasound reverse time migration for human brain imaging
Ting Li, Bo Feng, Yang Zhou, Rongwei Xu, Huazhong Wang
International Meeting for Applied Geoscience and Energy (IMAGE)
... ( x, t − Δt ) = 2 t 2 ( Δt ) where x denotes the vector coordinate (x, z), F is the spatial Fourier transform, and F-1 is the spatial inverse Fourier...
2024
Abstracts: Implicit Preconditioning for Least-squares Nonstationary Phase Shift; #90173 (2015)
Marcus R. Wilson and Robert J. Ferguson
Search and Discovery.com
... of a spatial fast Fourier transform, followed by multiplication by an extrapolation matrix, then an inverse fast Fourier transform. Written as matrices, we...
2015
-- no title --
user
Search and Discovery.com
... be reconstructed using Fourier methods. In this case the Fourier coefficients of the irregularly sampled data are retrieved by inverting the inverse Fourier operator...
Unknown
-- no title --
user
Search and Discovery.com
... be reconstructed using Fourier methods. In this case the Fourier coefficients of the irregularly sampled data are retrieved by inverting the inverse Fourier operator...
Unknown
Orthorhombic AVAZ inversion in the Laplace-Fourier domain
Lin Li, Jinmiao Zhang, Guangzhi Zhang, Zhenyu Zhu, Jiajia Zhang, Chao Li, Xinpeng Pan
International Meeting for Applied Geoscience and Energy (IMAGE)
... sin 2 cos 2 1 tan 2 sin 2 . 33 2 g m ln VP (6) The Laplace-Fourier transform of a time-continuous seismic signal is given...
2022
DAS noise attenuation using wavelet stack
Zhou Yu, Zhaojun Liu, Ge Zhan, Peng Cheng, Bin Wang, Weihong Fei
International Meeting for Applied Geoscience and Energy (IMAGE)
... methods, like deconvolution or Fourier transform based methods are less effective in addressing these noise problems because of the stationary...
2022
Abstract: Interpolation of Aliased Seismic Data in the Curvelet Domain; #90172 (2014)
Mostafa Naghizadeh, Mauricio D. Sacchi
Search and Discovery.com
... to solve our reconstruction problem. The inverse curvelet transform (our synthesis operator) is represented as the adjoint of equation 1 (2) m CH c...
2014
Abstracts: FX Cadzow / SSA Random Noise Filter: Frequency Extension; #90173 (2015)
Alexander Falkovskiy, Elvis Floreani, Gerry Schlosser
Search and Discovery.com
... entries of the same inverse Fourier transform returns the filtered traces. Instead of composing these extended matrices only over space dimensions...
2015
Application of seismic spectral blueing based on generalized S-transform in high-quality reservoir prediction in gas cloud area
Pengzhi Zhang, Lei Liu, Zhiheng Jiang, Zhenglong Zhang
International Meeting for Applied Geoscience and Energy (IMAGE)
... to determine mean value of seismic amplitude logarithmic spectrum. Finally, the time domain operator is obtained by the inverse Fourier transform...
2022
Improved synchrosqueezing matching pursuit incorporating w-transform
Chaohe Wang, Zhaoyun Zong
International Meeting for Applied Geoscience and Energy (IMAGE)
... characterization. Typical time-frequency analysis methods comprise the short-time Fourier transform (STFT), the continuous wavelet transform (CWT), the S-transform...
2024
Abstract: Seismic Denoising by Time-Frequency Reassignment; #90174 (2014)
Li Han, David Bonar, and Mauricio Sacchi
Search and Discovery.com
... Reassignment The well-known Short Time Fourier Transform (STFT) of the signal x(t ) can be defined as, G(t, ) x( )h* ( t )e i d , (1...
2014
Abstracts: CDP Noise Attenuation Using Local Linear Models; #90173 (2015)
Todor I. Todorov and Gary F. Margrave
Search and Discovery.com
... of the spectrum with a Gaussian window centered at the frequency inverse Fourier transform to get the frequency slice Noise attenuation The local linear...
2015
Abstract: Interpolation by Angular Deconvolved prior MWNI (AdMWNI); #90224 (2015)
Mark Ng and Dan Negut
Search and Discovery.com
...), where mkx is the spatial transform model in kx , T the sampling diagonal only matrix, F’ the inverse spatial Fourier transform operator, F...
2015