Extending the search space of full-waveform inversion beyond the single-scattering Born approximation: A tutorial review

S Operto, A Gholami, H Aghamiry, G Guo, S Beller… - Geophysics, 2023 - library.seg.org
Full-waveform inversion (FWI) can be made immune to cycle skip** by matching the
recorded data with traveltime errors smaller than one-half period from inaccurate subsurface …

Quantitative photoacoustic tomography using iteratively refined wavefield reconstruction inversion: a simulation study

SM Ranjbaran, HS Aghamiry, A Gholami… - … on Medical Imaging, 2023 - ieeexplore.ieee.org
The ultimate goal of photoacoustic tomography is to accurately map the absorption
coefficient throughout the imaged tissue. Most studies either assume that acoustic properties …

Extended-space full-waveform inversion in the time domain with the augmented Lagrangian method

A Gholami, HS Aghamiry, S Operto - Geophysics, 2022 - library.seg.org
The search space of full-waveform inversion (FWI) can be extended via a relaxation of the
wave equation to increase the linear regime of the inversion. This wave-equation relaxation …

Implementing bound constraints and total-variation regularization in extended full-waveform inversion with the alternating direction method of multiplier: Application to …

HS Aghamiry, A Gholami… - Geophysical Journal …, 2019 - academic.oup.com
Full-waveform inversion (FWI) is a waveform matching procedure, which can provide a
subsurface model with a wavelength-scale resolution. However, this high resolution makes …

Full waveform inversion by proximal Newton method using adaptive regularization

HS Aghamiry, A Gholami… - Geophysical Journal …, 2021 - academic.oup.com
Regularization is necessary for solving non-linear ill-posed inverse problems arising in
different fields of geosciences. The base of a suitable regularization is the prior expressed …

Coherence-enhancing anisotropic diffusion filter for 3D high-resolution reconstruction of P-wave velocity and density using full-waveform inversion: Application to a …

L Métivier, R Brossier, A Hoffmann, JM Mirebeau… - Geophysics, 2024 - library.seg.org
Regularization is a central topic in the study of the solutions of ill-posed inverse problems.
High-resolution seismic imaging using full-waveform inversion (FWI) belongs to this …

Accurate and efficient data-assimilated wavefield reconstruction in the time domain

HS Aghamiry, A Gholami, S Operto - Geophysics, 2020 - library.seg.org
Wavefield reconstruction inversion (WRI) mitigates cycle skip** in full-waveform inversion
by computing wavefields that do not exactly satisfy the wave equation to match data with …

Wavefield reconstruction inversion of GPR data for permittivity and conductivity models in the frequency domain based on modified total variation regularization

D Feng, S Ding, X Wang, X Wang - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
The full-waveform inversion (FWI) of ground-penetrating radar (GPR) data yields promise for
quantitatively characterizing the parameters of the Earth's shallow subsurface. However …

On the use of nonlinear anisotropic diffusion filters for seismic imaging using the full waveform

L Métivier, R Brossier - Inverse Problems, 2022 - iopscience.iop.org
Nonlinear anisotropic diffusion filters have been introduced in the field of image processing
for image denoising and image restoration. They are based on the solution of partial …