نتایج جستجو برای: the cs sampling operator

تعداد نتایج: 16086983  

Journal: :CoRR 2016
Chia Wei Lim Michael B. Wakin

Multi-Coset (MC) sampling is a well established, practically feasible scheme for sampling multiband analog signals below the Nyquist rate. MC sampling has gained renewed interest in the Compressive Sensing (CS) community, due partly to the fact that in the frequency domain, MC sampling bears a strong resemblance to other sub-Nyquist CS acquisition protocols. In this paper, we consider MC sampli...

2013
Michael Paquette Sylvain Merlet Guillaume Gilbert Rachid Deriche Maxime Descoteaux

Purpose:Diffusion Spectrum Imaging (DSI) enables to reconstruct the Ensemble Average Propagator (EAP) at the expense of having to acquire a large number of measurements. Compressive Sensing (CS) offers an efficient way to decrease the required number of measurements. The purpose of this work is to perform a thorough experimental comparison of 3 sampling strategies and 6 sparsifying transforms t...

2009
T. Zhang M. Lustig S. Vasanawala J. M. Pauly

Introduction: There has been a rising interest in combining parallel imaging (PI) [1,2] with compressed sensing (CS) [3] to achieve high acceleration and reduce the noise amplification that comes from traditional PI reconstruction (e.g. SENSE[1], GRAPPA[2], etc). Existing approaches are: (a) sequentially apply PI and CS [4]; (b) sequentially apply CS and PI [5]; (c) simultaneously apply PI and ...

2011
F. Li T. J. Cornwell F. de Hoog

Compressive sampling is a new paradigm for sampling, based on sparseness of signals or signal representations. It is much less restrictive than Nyquist-Shannon sampling theory and thus explains and systematises the widespread experience that methods such as the Högbom CLEAN can violate the Nyquist-Shannon sampling requirements. In this paper, a CS-based deconvolution method for extended sources...

2017
Chenglu Sun Wei Li Wei Chen

For extracting the pressure distribution image and respiratory waveform unobtrusively and comfortably, we proposed a smart mat which utilized a flexible pressure sensor array, printed electrodes and novel soft seven-layer structure to monitor those physiological information. However, in order to obtain high-resolution pressure distribution and more accurate respiratory waveform, it needs more t...

2016
Robert Spitzer Anita J Norman Michael Schneider Göran Spong

Reliable population estimates are an important aspect of sustainable wildlife management and conservation but can be difficult to obtain for rare and elusive species. Here, we test a new census method based on pedigree reconstruction recently developed by Creel and Rosenblatt (2013). Using a panel of 96 single-nucleotide polymorphisms (SNPs), we genotyped fecal samples from two Swedish brown be...

2011
Moshe Mishali Yonina C. Eldar

This chapter generalizes compressed sensing (CS) to reduced-rate sampling of analog signals. It introduces Xampling, a unified framework for low rate sampling and processing of signals lying in a union of subspaces. Xampling consists of two main blocks: Analog compression that narrows down the input bandwidth prior to sampling with commercial devices followed by a nonlinear algorithm that detec...

2011
F. Li T. J. Cornwell F. de Hoog

Compressive sampling is a new paradigm for sampling, based on sparseness of signals or signal representations. It is much less restrictive than Nyquist-Shannon sampling theory and thus explains and systematises the widespread experience that methods such as the Högbom CLEAN can violate the Nyquist-Shannon sampling requirements. In this paper, a CS-based deconvolution method for extended sources...

Journal: :CoRR 2011
Moshe Mishali Yonina C. Eldar

This chapter generalizes compressed sensing (CS) to reduced-rate sampling of analog signals. It introduces Xampling, a unified framework for low rate sampling and processing of signals lying in a union of subspaces. Xampling consists of two main blocks: Analog compression that narrows down the input bandwidth prior to sampling with commercial devices followed by a nonlinear algorithm that detec...

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