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Erschienen in: International Journal of Computer Vision 3/2013

01.12.2013

An Improved Hierarchical Dirichlet Process-Hidden Markov Model and Its Application to Trajectory Modeling and Retrieval

verfasst von: Weiming Hu, Guodong Tian, Xi Li, Stephen Maybank

Erschienen in: International Journal of Computer Vision | Ausgabe 3/2013

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Abstract

In this paper, we propose a hierarchical Bayesian model, an improved hierarchical Dirichlet process-hidden Markov model (iHDP-HMM), for visual document analysis. The iHDP-HMM is capable of clustering visual documents and capturing the temporal correlations between the visual words within a visual document while identifying the number of document clusters and the number of visual topics adaptively. A Bayesian inference mechanism for the iHDP-HMM is developed to carry out likelihood evaluation, topic estimation, and cluster membership prediction. We apply the iHDP-HMM to simultaneously cluster motion trajectories and discover latent topics for trajectory words, based on the proposed method for constructing the trajectory word codebook. Then, an iHDP-HMM-based probabilistic trajectory retrieval framework is developed. The experimental results verify the clustering accuracy of the iHDP-HMM and trajectory retrieval accuracy of the proposed framework.

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Metadaten
Titel
An Improved Hierarchical Dirichlet Process-Hidden Markov Model and Its Application to Trajectory Modeling and Retrieval
verfasst von
Weiming Hu
Guodong Tian
Xi Li
Stephen Maybank
Publikationsdatum
01.12.2013
Verlag
Springer US
Erschienen in
International Journal of Computer Vision / Ausgabe 3/2013
Print ISSN: 0920-5691
Elektronische ISSN: 1573-1405
DOI
https://doi.org/10.1007/s11263-013-0638-8

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