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Tracking of multiple-point targets using multiple-model-based particle filtering in infrared image sequence

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Title Tracking of multiple-point targets using multiple-model-based particle filtering in infrared image sequence
 
Creator ZAVERI, MA
MERCHANT, SN
DESAI, UB
 
Subject monte-carlo methods
multitarget tracking
algorithms
particle filtering
interacting multiple model
automated model selection
data association
 
Description Particle filtering is investigated extensively due to its importance in target tracking for nonlinear and non-Gaussian models. A particle filter can track an arbitrary trajectory only if the target dynamics models are known and the time instant when trajectory switches from one model to another model is known a priori. In real applications, it is unlikely to meet both these conditions. We propose a novel method that overcomes the lack of this knowledge. In the proposed method, an interacting multiple-model-based approach is exploited along with particle filtering. Moreover, we automate the model selection process for tracking an arbitrary trajectory. In the proposed approach, a priori information about the exact model that a target may follow is not required. Another problem with multiple trajectory tracking using a particle filter is data association, namely, observation to track fusion. For data association, we use three methods. In the first case, an implicit observation to track assignment is performed using a nearest neighbor (NN) method for data association; this is fast and easy to implement. In the second method, the uncertainty about the origin of an observation is overcome by using a centroid of measurements to evaluate weights for particles as well as to calculate the likelihood of a model. In the third method, a Markov random field (MRF)-based method is used. The MRF method enables us to exploit the neighborhood concept for data association, i.e., the association of a measurement influences an association of its neighboring measurement. (C) 2006 Society of Photo-Optical Instrumentation Engineers.
 
Publisher SPIE-INT SOCIETY OPTICAL ENGINEERING
 
Date 2011-08-29T07:51:03Z
2011-12-26T12:58:29Z
2011-12-27T05:48:32Z
2011-08-29T07:51:03Z
2011-12-26T12:58:29Z
2011-12-27T05:48:32Z
2006
 
Type Article
 
Identifier OPTICAL ENGINEERING, 45(5), -
0091-3286
http://dx.doi.org/10.1117/1.2205858
http://dspace.library.iitb.ac.in/xmlui/handle/10054/12019
http://hdl.handle.net/10054/12019
 
Language en