55 citations · 110 across the 11 of their papers we have counts for
5 papers · 1 filter
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…
Convergence Guarantees for Non-Convex Optimisation with Cauchy-Based Penalties
Oktay Karakus, Perla Mayo, Alin Achim
In this paper, we propose a proximal splitting methodology with a non-convex penalty function based on the heavy-tailed Cauchy distribution. We first suggest a closed-form expressi…
Detection of Ship Wakes in SAR Imagery Using Cauchy Regularisation
Tianqi Yang, Oktay Karakuş, Alin Achim
Ship wake detection is of great importance in the characterisation of synthetic aperture radar (SAR) images of the ocean surface since wakes usually carry essential information abo…
Ship Wake Detection in SAR Images via Sparse Regularization
Oktay Karakuş, Igor Rizaev, Alin Achim
In order to analyse synthetic aperture radar (SAR) images of the sea surface, ship wake detection is essential for extracting information on the wake generating vessels. One possib…
Recovery of compressively sensed ultrasound images with structured Sparse Bayesian Learning
Richard Porter, Vladislav Tadic, Alin Achim
In this paper, we consider the problem of recovering compressively sensed ultrasound images. We build on prior work, and consider a number of existing approaches that we consider t…