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The paper describes a methodology for the recognition of high-level group activities. Our system recognizes group
 

Summary: Abstract
The paper describes a methodology for the recognition
of high-level group activities. Our system recognizes group
activities including group actions, group-persons
interactions, group-group interactions, inter-group
interactions, and their combinations described using a
common representation scheme. Our approach is to
represent various types of complex group activities with a
language-like representation, and then to recognize
represented activities based on the recognition of activities
of individual group members. A hierarchical recognition
algorithm is designed for the recognition of high-level
group activities. The system was tested to recognize
activities such as 'two groups fighting', `a group of thieves
stealing an object from another group', and `a group of
policemen arresting a group of criminals (or a criminal)'.
Videos downloaded from YouTube as well as videos that we
have taken are tested. Experimental results shows that our
system recognizes complicated group activities, and it does
it more reliably and accurately compared to previous

  

Source: Aggarwal, J. K. - Department of Electrical and Computer Engineering, University of Texas at Austin

 

Collections: Computer Technologies and Information Sciences; Engineering