Introducing nonuniform sparse proximal averaging network for seismic reflectivity inversion

S Mache, PK Pokala, K Rajendran… - IEEE Transactions …, 2023 - ieeexplore.ieee.org
We consider the problem of seismic reflectivity inversion, which pertains to the high-
resolution recovery of interface locations and reflection coefficients from seismic …

Quantized proximal averaging networks for compressed image recovery

NKK Reddy, MM Bulusu, PK Pokala… - Proceedings of the …, 2023 - openaccess.thecvf.com
We solve the analysis sparse coding problem considering a combination of convex and non-
convex sparsity promoting penalties. The multi-penalty formulation results in an iterative …

Tight-Frame-Like Analysis-Sparse Recovery Using Nontight Sensing Matrices

KKR Nareddy, AJ Kamath, CS Seelamantula - SIAM Journal on Imaging …, 2024 - SIAM
The choice of the sensing matrix is crucial in compressed sensing. Random Gaussian
sensing matrices satisfy the restricted isometry property, which is crucial for solving the …

Tight-frame-like Sparse Recovery Using Non-tight Sensing Matrices

KKR Nareddy, AJ Kamath, CS Seelamantula - arXiv preprint arXiv …, 2023 - arxiv.org
The choice of the sensing matrix is crucial in compressed sensing (CS). Gaussian sensing
matrices possess the desirable restricted isometry property (RIP), which is crucial for …

An ensemble of proximal networks for sparse coding

KKR Nareddy, S Mache, PK Pokala… - … on Image Processing …, 2022 - ieeexplore.ieee.org
Sparse coding methods are iterative and typically rely on proximal gradient methods. While
the commonly used sparsity promoting penalty is the ℓ 1 norm, alternatives such as the …

Full Waveform Inversion with Low-Frequency Extrapolation

S Wang, W Hu, X Wu, J Chen - Deep Learning for Seismic Data …, 2024 - Springer
Full waveform inversion (FWI) is an advanced seismic processing technology for
reconstructing high-resolution, subsurface geophysical models utilizing entire waveform …