2024-03-19T13:24:26Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00005159
2023-01-16T05:02:58Z
312:313:314
An HMM/MRF-based stochastic framework for robust vehicle tracking
Kato, Jien
12905
Watanabe, Toyohide
12906
Joga, Sébastien
12907
Ying, Liu
12908
Hase, Hiroyuki
12909
加藤, ジェーン
12910
渡邉, 豊英
12911
Hidden Markov model (HMM)
image classification
image segmentation
Markov random field (MRF)
traffic surveillance
vehicle tracking
Shadows of moving objects often obstruct robust visual tracking. In this paper, we present a car tracker based on a hidden Markov model/Markov random field (HMM/MRF)-based segmentation method that is capable of classifying each small region of an image into three different categories: vehicles, shadows of vehicles, and background from a traffic-monitoring movie. The temporal continuity of the different categories for one small region location is modeled as a single HMM along the time axis, independently of the neighboring regions. In order to incorporate spatial-dependent information among neighboring regions into the tracking process, at the state-estimation stage, the output from the HMMs is regarded as an MRF and the maximum a posteriori criterion is employed in conjunction with the MRF for optimization. At each time step, the state estimation for the image is equivalent to the optimal configuration of the MRF generated through a stochastic relaxation process. Experimental results show that, using this method, foreground (vehicles) and nonforeground regions including the shadows of moving vehicles can be discriminated with high accuracy.
journal article
IEEE
2004-09
application/pdf
IEEE Transactions on Intelligent Transportation Systems
3
5
142
154
http://hdl.handle.net/2237/6743
1524-9050
https://nagoya.repo.nii.ac.jp/record/5159/files/01331385.pdf
eng
https://doi.org/10.1109/TITS.2004.833791
Copyright © 2004 IEEE. Reprinted from (relevant publication info). This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Nagoya University’s products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org.