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231224s2015 xx |||||o 00| ||eng c |
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|a 10.1109/TPAMI.2014.2353641
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|a eng
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|a Bazzani, Loris
|e verfasserin
|4 aut
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| 245 |
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|a Joint Individual-Group Modeling for Tracking
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|c 2015
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|a Text
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|a ƒaComputermedien
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|a Date Completed 27.05.2016
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|a Date Revised 10.09.2015
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|a published: Print
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|a Citation Status MEDLINE
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|a We present a novel probabilistic framework that jointly models individuals and groups for tracking. Managing groups is challenging, primarily because of their nonlinear dynamics and complex layout which lead to repeated splitting and merging events. The proposed approach assumes a tight relation of mutual support between the modeling of individuals and groups, promoting the idea that groups are better modeled if individuals are considered and vice versa. This concept is translated in a mathematical model using a decentralized particle filtering framework which deals with a joint individual-group state space. The model factorizes the joint space into two dependent subspaces, where individuals and groups share the knowledge of the joint individual-group distribution. The assignment of people to the different groups (and thus group initialization, split and merge) is implemented by two alternative strategies: using classifiers trained beforehand on statistics of group configurations, and through online learning of a Dirichlet process mixture model, assuming that no training data is available before tracking. These strategies lead to two different methods that can be used on top of any person detector (simulated using the ground truth in our experiments). We provide convincing results on two recent challenging tracking benchmarks
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| 650 |
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|a Journal Article
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|a Zanotto, Matteo
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cristani, Marco
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Murino, Vittorio
|e verfasserin
|4 aut
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|i Enthalten in
|t IEEE transactions on pattern analysis and machine intelligence
|d 1979
|g 37(2015), 4 vom: 01. Apr., Seite 746-59
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|x 1939-3539
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