نتایج جستجو برای: d deconvolution operation however

تعداد نتایج: 2293398  

Journal: :journal of current ophthalmology 0
سیدجواد هاشمیان seyed javad hashemian فریبا بیگ زاده fariba bigzadeh علیرضا فروتن alireza foroutan شهراد تاج الدینی shahrad tajoddini محمدجعفر قائم پناه mohammad jafar ghaempanah محمدابراهیم جعفری mohammad ebrahim jafari

purpose : to evaluate the efficacy, safety, predictability and stability of implantable collamer lens (icl) and toric icl for the treat­ment of high myopia and high myopic astigmatism methods : in this prospective nonrandomized clinical trial, 95 eyes of 51 patients who underwent icl (31 eyes) and toric icl (64 eyes) implantations were participate in eye research center, department of ophthalmo...

2011
Kim Douma Anneke van Susteren Marc van Zandvoort

Pathological neo-vascularization, i.e., the expansion of the vascular bed in solid tumors and after hindlimb ischemia and myocardial infarction, occurs through angiogenesis and/or arteriogenesis [1]. Quantification of microvascular morphology would allow evaluation of the effect of proand anti-angiogenic therapy. However, due to the point spread function (PSF) of the TPLSM setup, quantification...

Journal: :Nuclear materials and energy 2021

• LIBS & SIMS depth profiles analysis of Be-based layers containing C, O, H, D-fuel. Deconvolution D α and H lines by Lorentz fitting for the quantification H. MESB plot Stark broadening line evaluation T e n , resp. Determination fuel content CF-LIBS comparison with TOF-ERDA IBA. Study variation elemental composition when changing . A remote system is being considered as an tool in ITER monito...

2005
Mikkel N. Schmidt Morten Mørup

We present a novel method for automatic transcription of polyphonic music based on a recently published algorithm for non-negative matrix factor 2-D deconvolution. The method works by simultaneously estimating a time-frequency model for an instrument and a pattern corresponding to the notes which are played based on a log-frequency spectrogram of the music.

1998
Paul Sava James Rickett Sergey Fomel Jon Claerbout

Spectral factorization methods are used for the estimation of minimum phase time series from a given power spectrum. We present an efficient technique for spectral factorization, based on Newton’s method. We show how to apply the method to the factorization of both auto and cross-spectra, and present a simple example of 2-D deconvolution in the helical coordinate system.

1999

tion techniques, such as predictive deconvolution or Radon transforms, fail in the presence of complex structures. A technique popularized by the Delphi consortium offers an attractive alternative in 2-D because it is theoretically independent of subsurface structure and can therefore attack all surface-related multiples regardless of their complexity. The Delphi approach can be summarized by t...

2009
S. J. Wharton R. Bowtell Peter Mansfield

Introduction: Phase images generated using gradient echo techniques at high field strength show excellent contrast related to the variation of magnetic susceptibility across different brain tissues [1] (Fig. 1a&d). Extraction of accurate anatomical information from phase images is however made difficult by the non-local relationship between the field perturbation, which underlies the phase vari...

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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