Browsing by Keywords "Compressed sensing"
Now showing items 1-20 of 40
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Accelerated phase-cycled SSFP imaging with compressed sensing
(Institute of Electrical and Electronics Engineers Inc., 2015)Balanced steady-state free precession (SSFP) imaging suffers from irrecoverable signal losses, known as banding artifacts, in regions of large B0 field inhomogeneity. A common solution is to acquire multiple phase-cycled ... -
Adaptive measurement matrix design in compressed sensing based direction of arrival estimation
(IEEE, 2021)Design of measurement matrices is an important aspect of compressed sensing (CS) based direction of arrival (DoA) applications that enables reduction in the analog channels to be processed in sparse target environments. ... -
Adaptive measurement matrix design in direction of arrival estimation
(IEEE, 2022-09-26)Advances in compressed sensing (CS) theory have brought new perspectives to encoding and decoding of signals with sparse representations. The encoding strategies are determined by measurement matrices whose design is a ... -
Adaptive techniques in compressed sensing based direction of arrival estimation
(Bilkent University, 2021-07)Direction of arrival (DOA) estimation is an important research area having exten-sive applications including radar, sonar, wireless communications, and electronic warfare systems. Development and popularization of the ... -
Automated parameter selection for accelerated mri reconstruction via low-rank modeling of local k-space neighborhoods
(Elsevier GmbH, 2022-02-01)Purpose: Image quality in accelerated MRI rests on careful selection of various reconstruction parameters. A common yet tedious and error-prone practice is to hand-tune each parameter to attain visually appealing ... -
A comparison between the CS-TOF and the CTA/DSA for WEB device management
(Sage Publications, 2021-05-06)Purpose There is no study on the role of three-dimensional compressed sensing time of flight MR angiography (3D-CS-TOF) in the management of the WEB device. We evaluated the efficacy of 3-tesla 3D-CS-TOF for the management ... -
Compressed multi-contrast magnetic resonance image reconstruction using Augmented Lagrangian Method
(IEEE, 2016)In this paper, a Multi-Channel/Multi-Contrast image reconstruction algorithm is proposed. The method, which is based on the Augmented Lagrangian Method uses joint convex objective functions to utilize the mutual information ... -
Compressed sensing on ambiguity function domain for high resolution detection
(IEEE, 2010)In this paper, by using compressed sensing techniques, a new approach to achieve robust high resolution detection in sparse multipath channels is presented. Currently used sparse reconstruction techniques are not immediately ... -
Compressed sensing techniques for accelerated magnetic resonance imaging
(Bilkent University, 2017-07)Magnetic resonance imaging has seen a growing interest in the recent years due to its non-invasive and non-ionizing nature. However, imaging speed remains a major concern. Recently, compressed sensing theory has opened ... -
Compressive sampling and adaptive multipath estimation
(IEEE, 2010)In many signal processing problems such as channel estimation and equalization, the problem reduces to a linear system of equations. In this proceeding we formulate and investigate linear equations systems with sparse ... -
Compressive sensing based flame detection in infrared videos
(IEEE, 2013)In this paper, a Compressive Sensing based feature extraction algorithm is proposed for flame detection using infrared cameras. First, bright and moving regions in videos are detected. Then the videos are divided into ... -
Compressive sensing-based robust off-the-grid stretch processing
(Institution of Engineering and Technology, 2017)Classical stretch processing (SP) obtains high range resolution by compressing large bandwidth signals with narrowband receivers using lower rate analogue-to-digital converters. SP achieves the resolution of the large ... -
Cross-term free based bistatic radar system using sparse least squares
(SPIE, 2015)Passive Bistatic Radar (PBR) systems use illuminators of opportunity, such as FM, TV, and DAB broadcasts. The most common illuminator of opportunity used in PBR systems is the FM radio stations. Single FM channel based PBR ... -
Data from: Performance of compressed sensing based image reconstruction for photoacoustic imaging
(Bilkent University, 2022-08) -
Effect of different sparsity priors on compressive photon-sieve spectral imaging
(IEEE, 2018)Compressive spectral imaging is a rapidly growing area yielding higher performance novel spectral imagers than conventional ones. Inspired by compressed sensing theory, compressive spectral imagers aim to reconstruct the ... -
Efficient heterogeneous parallel programming for compressed sensing based direction of arrival estimation
(John Wiley & Sons Ltd., 2021-07)In the direction of arrival (DoA) estimation, typically sensor arrays are used where the number of required sensors can be large depending on the application. With the help of compressed sensing (CS), hardware complexity ... -
An empirical eigenvalue-threshold test for sparsity level estimation from compressed measurements
(IEEE, 2014)Compressed sensing allows for a significant reduction of the number of measurements when the signal of interest is of a sparse nature. Most computationally efficient algorithms for signal recovery rely on some knowledge ... -
Entropy polarization in butterfly transforms
(Academic Press, 2021-12)In signal processing, it is common to employ various transforms for analyzing or compressing real- or complex-valued signals. If the transform is chosen suitably, certain characteristics of the signal, such as spectral ... -
Fast system calibration with coded calibration scenes for magnetic particle imaging
(IEEE, 2019)Magnetic particle imaging (MPI) is a relatively new medical imaging modality, which detects the nonlinear response of magnetic nanoparticles (MNPs) that are exposed to external magnetic fields. The system matrix (SM) method ... -
Faz-MIMO sistemlerinde geliş açısı kestirim performansı karşılaştırması
(IEEE, 2021-07-19)Bu çalışmada, literatürde yer alan Fazlı Çoklu Giriş-Çoklu Çıkış (Fazlı-MIMO) dizi konsepti ile Sıkıştırılmış Algılama (SA) teknikleri ilk defa birlikte ele alınarak bir radar sisteminde çoklu hedefler için geliş açısı ...
