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  1. Proceedings of the 1st ACM international workshop on Multimodal pervasive video analysis (MPVA '10)
  2. Modeling and recognition of complex multi-person interactions in video
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Image-based indoor positioning system: fast image matching using omnidirectional panoramic images
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Learning local features for age estimation on real-life faces
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3d gesture recognition applying long short-term memory and contextual knowledge in a CAVE
Space speaks: towards socially and personality aware visual surveillance
Modeling and recognition of complex multi-person interactions in video
Learning human pose in crowd
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Modeling and recognition of complex multi-person interactions in video

Content Provider ACM Digital Library
Author Roy-Chowdhury, Amit K. Sethi, Ricky J.
Abstract In this paper, we focus on the problem of searching for complex activities involving multiple, interacting objects in video. We examine the dynamics of formation and dispersal of groups as well as their interactions with other groups and individuals. In order to establish a general formalism, we examine activities using relative distances in phase space via pairwise analysis of all objects. This allows us to characterize interactions directly by modeling multi-object activities with the Multiple Objects, Pairwise Analysis (MOPA) feature vector, which is based upon physical models of complex interactions in phase space; specifically, we model paired motion as a damped oscillator in phase space. We model and recognize more complex interactions by characterizing pairs which are correlated in phase space as groups. We show how this model can be used for recognition of complex activities on the standard CAVIAR, VIVID, and UCR Videoweb datasets capturing a variety of problem settings.
Starting Page 43
Ending Page 46
Page Count 4
File Format PDF
ISBN 9781450301671
DOI 10.1145/1878039.1878049
Language English
Publisher Association for Computing Machinery (ACM)
Publisher Date 2010-10-29
Publisher Place New York
Access Restriction Subscribed
Subject Keyword Video search Multi-object activity modeling Phase space
Content Type Text
Resource Type Article
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