نتایج جستجو برای: radioactive particle tracking

تعداد نتایج: 302870  

Journal: :Pattern Recognition Letters 2014
Erikson Freitas de Morais Anselmo Ferreira Sergio Augusto Cunha Ricardo M. L. Barros Anderson Rocha Siome Goldenstein

There is a growing scientific interest in the study of tactical and physical attributes in futsal. These analyses use the players’ motion, generally obtained with visual tracking, a task still not fully automated and that requires laborious guidance. In this regard, this work introduces an automatic procedure for estimating the positions of futsal players as probability distributions using mult...

Journal: :Journal of the Visualization Society of Japan 2009

Journal: :Pattern Recognition 2012
Erkut Erdem Séverine Dubuisson Isabelle Bloch

Many researchers argue that fusing multiple cues increases the reliability and robustness of visual tracking. However, how the multi-cue integration is realized during tracking is still an open issue. In this work, we present a novel data fusion approach for multi-cue tracking using particle filter. Our method differs from previous approaches in a number of ways. First, we carry out the integra...

2014
Liao Xue - Chao Liu Zhen - Xing

Based on implementing target tracking by means of particle filtering, a technique framework of tracking target by integrating particle filtering and background modeling is presented. The multi-target tracking (MTT) is classified into 5 modules as background modeling, multi-target tracking, initializing, re-initializing and particle filtering. Firstly, the author models each pixel of the image w...

2013
Sun Xiaohong

Particle filter algorithms are widely used for object tracking in video sequences, but the standard particle filter algorithm cannot solve the validity of particles ideally. To solve the problems of particle degeneration and sample impoverishment in a particle filter tracking algorithm, an improved object tracking algorithm is proposed, which combines ...

2011
Johannes Töger Marcus Carlsson Gustaf Söderlind Håkan Arheden Einar Heiberg

BACKGROUND Functional and morphological changes of the heart influence blood flow patterns. Therefore, flow patterns may carry diagnostic and prognostic information. Three-dimensional, time-resolved, three-directional phase contrast cardiovascular magnetic resonance (4D PC-CMR) can image flow patterns with unique detail, and using new flow visualization methods may lead to new insights. The aim...

2003
S. N. Tripathi

Radioactive aerosols differ physically from non-radioactive aerosols by the appreciable charge that they may carry. This arises from a competition between the charge generated by the radioactive decays occurring within each aerosol and the subsequent diffusion of the ions formed back onto the particle. At high levels of activity, the particles may self-discharge, at low and intermediate activit...

1998
Dirk Engelmann Christoph Garbe Michael Stöhr Peter Geißler Frank Hering Bernd Jähne

Particle Tracking Velocimetry (PTV) has become a standard technique frequently applied in flow field diagnostics ([1],[7],[8]). This article presents a novel technique which combines the strength of well known 2-D PTV with stereo calibration and correlation techniques to obtain 3D Lagrangian velocity fields. The here presented stereo correlation technique is fundamental for 3-D PTV. In addition...

Journal: :IEICE Transactions 2014
Nobuo Nakajima

On March 11, 2011, a huge tsunami caused by the Great East Japan Earthquake destroyed all the electrical power facilities in the Fukushima Daiichi nuclear power plant. As a result, the reactors were badly damaged, and radioactive particles were widely scattered in the surrounding areas. In order to study the behavior of the radioactive particles emitted from the Fukushima Daiichi nuclear power ...

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