An augmented Lagrangian method for complex-valued compressed SAR imaging

HE Güven, A Güngör, M Cetin - IEEE Transactions on …, 2016 - ieeexplore.ieee.org
In this paper, we present a solution to the complex synthetic aperture radar (SAR) imaging
problem within a constrained optimization formulation where the objective function includes …

GPR target detection by joint sparse and low-rank matrix decomposition

FHC Tivive, A Bouzerdoum… - IEEE Transactions on …, 2018 - ieeexplore.ieee.org
Ground penetrating radar (GPR) uses electromagnetic waves to image, locate, and identify
changes in electric and magnetic properties in the ground. The received signal comprises …

Autofocused compressive SAR imaging based on the alternating direction method of multipliers

A Güngör, M Çetin, HE Güven - 2017 IEEE Radar Conference …, 2017 - ieeexplore.ieee.org
We present an alternating direction method of multipliers (ADMM) based autofocused
Synthetic Aperture Radar (SAR) imaging method in the presence of unknown 1-D phase …

A matrix-free reconstruction method for compressive focal plane array imaging

A Güngör, OF Kar, HE Güven - 2018 25th IEEE International …, 2018 - ieeexplore.ieee.org
In this study, we propose a novel algorithm for compressive imaging using digital
micromirror device (DMD) modulated focal plane array (FPA) data. In this setting, DMD …

An efficient parallel algorithm for single-pixel and fpa imaging

OF Kar, A Güngör, S Ilbey… - Computational Imaging …, 2018 - spiedigitallibrary.org
Long image acquisition time is a critical problem in single-pixel-imaging. Here, we propose
a new high-speed single-pixel compressive imaging method. We develop an ADMM based …

An augmented lagrangian method for autofocused compressed sar imaging

A Güngör, M Cetin, HE Güven - 2015 3rd International …, 2015 - ieeexplore.ieee.org
We present an autofocus algorithm for Compressed SAR Imaging. The technique estimates
and corrects for 1-D phase errors in the phase history domain, based on prior knowledge …

Fast recovery of compressed multi-contrast magnetic resonance images

A Güngör, E Kopanoğlu, T Çukur… - Medical Imaging 2017 …, 2017 - spiedigitallibrary.org
In many settings, multiple Magnetic Resonance Imaging (MRI) scans are performed with
different contrast characteristics at a single patient visit. Unfortunately, MRI data-acquisition …

A performance analysis on the optimal number of measurements for coded compressive imaging

OF Kar, A Güngör, S Ilbey, CB Top… - 2018 IEEE Global …, 2018 - ieeexplore.ieee.org
In this paper, we consider two practical coded compressive imaging techniques. We
investigate the optimal number of measurements under quadratic signal-to-noise-ratio …

An adaptive relaxed Alternating Direction Method of Multipliers for compressive focal plane array imaging

OF Kar, A Güngör, HE Güven - 2018 26th Signal Processing …, 2018 - ieeexplore.ieee.org
In this paper, we propose a digital micromirror array based super-resolved image
reconstruction algorithm. The method, which is based on Alternating Direction Method of …

[PDF][PDF] Research Online

FHC Tivive, A Bouzerdoum, S Karekal - International Symposium on …, 2005 - academia.edu
One of the main problems when develo** an eye detection and tracking system is to build
a robust eye classifier that can detect the true eye patterns in complex scenes. This classi …