نتایج جستجو برای: vortex blob method

تعداد نتایج: 1654569  

2003
Shu-Fai Wong Kwan-Yee Kenneth Wong

Human body tracking is useful in applications like medical diagnostic, human computer interface, visual surveillance etc. In most cases, only rough position of the target is needed, and blob tracking can be used. The blob region is located within a searching window, which is shifted and resized in each frame based on previous observations. The observations are the locations of the blob in the f...

Journal: :TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 1996

Journal: :The Journal of comparative neurology 1992
R Malach

Cytochrome oxidase (CO) dense blobs in primate striate cortex provide a striking example of parallel processing of visual information. The level of isolation of the blobs from the surrounding interblob tissue was investigated in the present study by combining CO staining with Golgi impregnation of dendritic arbors in the same tissue sections. The data are based on material from two marmoset and...

Journal: :J. Comput. Physics 2014
Craig Michoski D. Meyerson Tobin Isaac F. Waelbroeck

A new parallel discontinuous Galerkin solver, called ArcOn, is developed to describe the intermittent turbulent transport of filamentary blobs in the scrape-off layer (SOL) of fusion plasma. The model is comprised of an elliptic subsystem coupled to two convection-dominated reactiondiffusion-convection equations. Upwinding is used for a class of numerical fluxes developed to accommodate cross p...

بازدیدی طهرانی, فرزاد, بداقی, داریوش, جدیدی, محمد, کیامنصوری, محسن,

The purpose of the present study is to investigate and analyze numerically, the effective mechanisms on the flow field and pollutant dispersion around a simple and long street canyon by means of Large Eddy Simulation (LES) approach using various inflow turbulence generation methods. For this purpose, four methods i.e. vortex, mapping, synthetic and no-inlet perturbation methods are used as infl...

1996
Ali Azarbayejani Alex Pentland

We describe a method for estimation of 3-D geometry from 2-D blob features. Blob features are clusters of similar pixels in the image plane and can arise from similarity of color, texture, motion and other signal-based metrics. The motivation for considering such features comes from recent successes in real-time extraction and tracking of such blob features in complex cluttered scenes in which ...

2015
Alexei A. Morozov Alexander F. Polupanov Olga S. Sushkova

A method for the monitoring of anomalous human behaviour that is based on the logical description of complex human behaviour patterns and special kinds of blob (a separated area of a foreground image) motion statistical metrics is developed. The concurrent object-oriented logic language is used for the analysis of graphs of tracks of moving blobs; the graphs are supplied by low-level analysis a...

2014
Lingfei Wu Kesheng Wu Alex Sim Michael Churchill Jong Y. Choi Andreas Stathopoulos CS Chang Scott Klasky

Magnetic fusion could provide an inexhaustible, clean, and safe solution to the global energy needs. The success of magnetically-confined fusion reactors demands steady-state plasma confinement which is challenged by the edge turbulence such as the blob-filaments. Real-time analysis can be used to monitor the progress of fusion experiments and prevent catastrophic events. We present a real-time...

2011
Kai Cordes Oliver Topic Manuel Scherer Carsten Klempt Bodo Rosenhahn Jörn Ostermann

We present a method to classify atomic density distributions using CCD images obtained in a quantum optics experiment. The classification is based on the scale invariant detection and precise localization of the central blob in the input image structure. The key idea is the usage of an a priori known shape of the feature in the image scale space. This approach results in higher localization acc...

Journal: :Math. Comput. 2017
Jian-Guo Liu Rong Yang

In this paper, we introduce a random particle blob method for the Keller-Segel equation (with dimension d ≥ 2) and establish a rigorous convergence analysis.

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