55 citations · 111 across the 19 of their papers we have counts for
11 papers · 1 filter
SAR Image Autofocusing using Wirtinger calculus and Cauchy regularization
Zi-Yao Zhang, Odysseas Pappas, Alin Achim
In this paper, an optimization model using Cauchy regularization is proposed for simultaneous SAR image reconstruction and autofocusing. A coordinate descent framework in which the…
Exploiting the Dual-Tree Complex Wavelet Transform for Ship Wake Detection in SAR Imagery
Wanli Ma, Alin Achim, Oktay Karakuş
In this paper, we analyse synthetic aperture radar (SAR) images of the sea surface using an inverse problem formulation whereby Radon domain information is enhanced in order to acc…
A Simulation Study to Evaluate the Performance of the Cauchy Proximal Operator in Despeckling SAR Images of the Sea Surface
Oktay Karakuş, Igor Rizaev, Alin Achim
The analysis of ocean surface is widely performed using synthetic aperture radar (SAR) imagery as it yields information for wide areas under challenging weather conditions, during…
Non-convex Super-resolution of OCT images via sparse representation
Gabriele Scrivanti, Luca Calatroni, Serena Morigi +2
We propose a non-convex variational model for the super-resolution of Optical Coherence Tomography (OCT) images of the murine eye, by enforcing sparsity with respect to suitable di…
On Solving SAR Imaging Inverse Problems Using Non-Convex Regularization with a Cauchy-based Penalty
Oktay Karakuş, Alin Achim
Synthetic aperture radar (SAR) imagery can provide useful information in a multitude of applications, including climate change, environmental monitoring, meteorology, high dimensio…
A Generalized Gaussian Extension to the Rician Distribution for SAR Image Modeling
Oktay Karakuş, Ercan E. Kuruoglu, Alin Achim
In this paper, we present a novel statistical model, (GG-Rician) distribution, for the characterization of synthetic aperture radar (SAR)…