نتایج جستجو برای: spherical deconvolution

تعداد نتایج: 54852  

Journal: :CoRR 2017
Mauro Zucchelli Maxime Descoteaux Gloria Menegaz

Diffusion Magnetic Resonance Imaging (DMRI) is the only non-invasive imaging technique which is able to detect the principal directions of water diffusion as well as neurites density in the human brain. Exploiting the ability of Spherical Harmonics (SH) to model spherical functions, we propose a new reconstruction model for DMRI data which is able to estimate both the fiber Orientation Distribu...

1997

case. from simultaneously rncasured rkm nholc pressure and flow Thr Cltrdfclfer ( (;larffelter. Tracy. and lf’ilwy] ) dec-nnvnlw rate, psD is alsn called “deccmvolved pressure, influence func[i(]lt rrw( hod has bwn nwd for t}Ic las( thrw decades for dr(er[ion or unif rwpunse bctlts~iur.Once p.~D is obtained. the n]ining the constant rate behavior of the ivell-rcwrvoir sys!em conventional interp...

ژورنال: دریا فنون 2019

Abstract: Image restoration is a critical step in many vision applications. Due to the poor quality of Passive Millimeter Wave (PMMW) images, especially in marine and underwater environment, developing strong algorithms for the restoration of these images is of primary importance. In addition, little information about image degradation process, which is referred to as Point Spread Function (PSF...

2012
Chris Bahr Louis Cattafesta

Array deconvolution is commonly used in aeroacoustic analysis to remove the influence of a microphone array’s point spread function from a conventional beamforming map. Unfortunately, the majority of deconvolution algorithms assume that the acoustic sources in a measurement are incoherent, which can be problematic for some aeroacoustic phenomena with coherent, spatially-distributed characterist...

2005
Rainer Stotzka Nicole V. Ruiter Tim O. Müller Rong Liu Hartmut Gemmeke

Ultrasound computer tomography is an imaging method capable of producing volume images with high spatial resolution. The imaged object is enclosed by a cylindrical array of transducers. While one transducer emits a spherical wavefront (pulse), all other transducers are recording the radiofrequency (RF) a–scans simultaneously. Then another transducer acts as the emitter and so on. In this paper ...

2006
Ivan Vasconcelos Roel Snieder

Seismic interferometry is a field of growing interest in exploration seismology. In this paper we provide the theoretical basis for performing interferometry by deconvolution. We argue that for general models, deconvolution interferometry gives only the causal scattering response between any two receivers, as opposed to cross-correlation which gives both causal and acausal scattering responses....

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