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Proceedings Paper

Interacting multiple-model-based tracking of multiple point targets using expectation maximization algorithm in infrared image sequence
Author(s): Mukesh A Zaveri; Uday B Desai; Shabbir N Merchant
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Paper Abstract

Data association and model selection are important factors for tracking multiple targets in a dense clutter environment without using apriori information about the target dynamic. We propose Interacting Multiple Model-Expectation Maximization (IMM-EM) algorithm, by incorporating different dynamic models for the target and Markov Random Field (MRF) for data association, and hence it is possible to track maneuvering and non-maneuvering 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 incooperating all validated measurements together using EM algorithm and exploiting MRF. It treats the data association problem as incomplete data problem. In the proposed method, all validated measurements are used to update the target state. It uses only measurement association as missing data, which simplifies E-step and M-step of the algorithm. In the proposed approach probability density function (pdf) of an observed data given target state and measurement association, is treated as a mixture pdf. This allows to combine likelihood of a measurement due to each model, and the association process is defined to incorporate IMM and consequently, it is possible to track any arbitrary trajectory. We also consider two different cases for association of measurement to target: Case I:- association of each measurement to target is independent of each other, Case II:- association of a measurement influences an association of its neighbor measurement.

Paper Details

Date Published: 23 June 2003
PDF: 12 pages
Proc. SPIE 5150, Visual Communications and Image Processing 2003, (23 June 2003); doi: 10.1117/12.499230
Show Author Affiliations
Mukesh A Zaveri, Indian Institute of Technology (India)
Uday B Desai, Indian Institute of Technology (India)
Shabbir N Merchant, Indian Institute of Technology (India)

Published in SPIE Proceedings Vol. 5150:
Visual Communications and Image Processing 2003
Touradj Ebrahimi; Thomas Sikora, Editor(s)

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