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A Network of Dynamic Probabilistic Models for Human Interaction Analysis

Authors
Suk, Heung-IlJain, Anil K.Lee, Seong-Whan
Issue Date
7월-2011
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Keywords
Dynamic Bayesian network; human interaction analysis; network of dynamic probabilistic models; sub-interactions; video surveillance
Citation
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY, v.21, no.7, pp.932 - 945
Indexed
SCIE
SCOPUS
Journal Title
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY
Volume
21
Number
7
Start Page
932
End Page
945
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/112140
DOI
10.1109/TCSVT.2011.2133570
ISSN
1051-8215
Abstract
We propose a novel method of analyzing human interactions based on the walking trajectories of human subjects, which provide elementary and necessary components for understanding and interpretation of complex human interactions in visual surveillance tasks. Our principal assumption is that an interaction episode is composed of meaningful small unit interactions, which we call "sub-interactions." We model each sub-interaction by a dynamic probabilistic model and propose a modified factorial hidden Markov model (HMM) with factored observations. The complete interaction is represented with a network of dynamic probabilistic models (DPMs) by an ordered concatenation of sub-interaction models. The rationale for this approach is that it is more effective in utilizing common components, i.e., sub-interaction models, to describe complex interaction patterns. By assembling these sub-interaction models in a network, possibly with a mixture of different types of DPMs, such as standard HMMs, variants of HMMs, dynamic Bayesian networks, and so on, we can design a robust model for the analysis of human interactions. We show the feasibility and effectiveness of the proposed method by analyzing the structure of network of DPMs and its success on four different databases: a self-collected dataset, Tsinghua University's dataset, the public domain CAVIAR dataset, and the Edinburgh Informatics Forum Pedestrian dataset.
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