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Interacting multiple-model-based tracking of multiple point targets using an expectation maximization algorithm in an infrared image sequence

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Title Interacting multiple-model-based tracking of multiple point targets using an expectation maximization algorithm in an infrared image sequence
 
Creator ZAVERI, MA
MERCHANT, SN
DESAI, UB
 
Subject maneuvering targets
maximum-likelihood
incomplete data
em algorithm
pmht
interacting multiple model
markov random field
expectation maximization
 
Description Data association and model selection are important factors for tracking multiple targets in a dense clutter environment without using a priori information about the target dynamic. We propose an interacting multiple model-expectation maximization (IMM-EM) algorithm by incorporating different dynamic models for the target and using Markov random field (MRF) for data association. In this way we are able to track maneuvering and nonmaneuvering targets simultaneously in a single batch mode (sequential). Moreover, it can be used for real-time application. The proposed method overcomes the problem of data association by incorporating all validated measurements together using an EM algorithm and exploiting MRF It treats the data association problem as an incomplete data problem and measurement association as missing data. In the proposed method, all validated measurements are used to update the target state, and the probability density function (pdf) of observed data, given a target state and measurement association, is treated as a mixture pdf. This allows us to combine the likelihood of a measurement due to each model. The association process now incorporates IMM, and consequently, it is possible to track any arbitrary trajectory. We also consider two different cases for association of measurement to target: association of each measurement to the target is independent of each other; and association of a measurement influences an association of its neighbor measurement. (C) 2005 Society of Photo-Optical Instrumentation Engineers.
 
Publisher SPIE-INT SOCIETY OPTICAL ENGINEERING
 
Date 2011-08-29T07:46:50Z
2011-12-26T12:58:29Z
2011-12-27T05:48:32Z
2011-08-29T07:46:50Z
2011-12-26T12:58:29Z
2011-12-27T05:48:32Z
2005
 
Type Article
 
Identifier OPTICAL ENGINEERING, 44(1), -
0091-3286
http://dx.doi.org/10.1117/1.1827221
http://dspace.library.iitb.ac.in/xmlui/handle/10054/12018
http://hdl.handle.net/10054/12018
 
Language en