957 resultados para Place recognition algorithm
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Magdeburg, Univ., Fak. für Elektrotechnik und Informationstechnik, Diss., 2011
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Emotion, audition, event-related potentials, MMN, multidimensional scaling, timbre, perception
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Magdeburg, Univ., Fak. für Elektrotechnik und Informationstechnik, Diss., 2007
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Biosignals processing, Biological Nonlinear and time-varying systems identification, Electomyograph signals recognition, Pattern classification, Fuzzy logic and neural networks methods
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Speaker Recognition, Speaker Verification, Sparse Kernel Logistic Regression, Support Vector Machine
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Background:Vascular remodeling, the dynamic dimensional change in face of stress, can assume different directions as well as magnitudes in atherosclerotic disease. Classical measurements rely on reference to segments at a distance, risking inappropriate comparison between dislike vessel portions.Objective:to explore a new method for quantifying vessel remodeling, based on the comparison between a given target segment and its inferred normal dimensions.Methods:Geometric parameters and plaque composition were determined in 67 patients using three-vessel intravascular ultrasound with virtual histology (IVUS-VH). Coronary vessel remodeling at cross-section (n = 27.639) and lesion (n = 618) levels was assessed using classical metrics and a novel analytic algorithm based on the fractional vessel remodeling index (FVRI), which quantifies the total change in arterial wall dimensions related to the estimated normal dimension of the vessel. A prediction model was built to estimate the normal dimension of the vessel for calculation of FVRI.Results:According to the new algorithm, “Ectatic” remodeling pattern was least common, “Complete compensatory” remodeling was present in approximately half of the instances, and “Negative” and “Incomplete compensatory” remodeling types were detected in the remaining. Compared to a traditional diagnostic scheme, FVRI-based classification seemed to better discriminate plaque composition by IVUS-VH.Conclusion:Quantitative assessment of coronary remodeling using target segment dimensions offers a promising approach to evaluate the vessel response to plaque growth/regression.
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Magdeburg, Univ., Fak. für Elektrotechnik und Informationstechnik, Diss., 2010
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Magdeburg, Univ., Fak. für Elektrotechnik und Informationstechnik, Diss., 2013
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Magdeburg, Univ., Fak. für Informatik, Diss., 2013
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Magdeburg, Univ., Fak. für Elektrotechnik und Informationstechnik, Diss., 2013
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Magdeburg, Univ., Med. Fak., Diss., 2014
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Magdeburg, Univ., Fak. für Informatik, Diss., 2014
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[s.c.]
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Magdeburg, Univ., Fak. für Informatik, Diss., 2015
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Otto-von-Guericke-Universität Magdeburg, Fakultät für Wirtschaftswissenschaft, Univ., Dissertation, 2015