Automatically detecting groups of conversing people has become a hot challenge, although a formal, widely-accepted definition of them is lacking. This gap can be filled by considering the social psychological notion of an F-formation as a loose geometric arrangement. In the literature, two main approaches followed this line, exploiting Hough voting [1] from one side and Graph Theory [2] on the other. This paper offers a thorough comparison of these two methods, highlighting the strengths and weaknesses of both in different real life scenarios. Our experiments demonstrate a deeper understanding of the problem by identifying the circumstances in which to adopt a particular method. Finally our study outlines what aspects of the problem are important to address for future improvements to this task.

Group detection in still images by F-formation modeling: A comparative study2013 14th International Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS)

SETTI, FRANCESCO
;
CRISTANI, Marco
2013-01-01

Abstract

Automatically detecting groups of conversing people has become a hot challenge, although a formal, widely-accepted definition of them is lacking. This gap can be filled by considering the social psychological notion of an F-formation as a loose geometric arrangement. In the literature, two main approaches followed this line, exploiting Hough voting [1] from one side and Graph Theory [2] on the other. This paper offers a thorough comparison of these two methods, highlighting the strengths and weaknesses of both in different real life scenarios. Our experiments demonstrate a deeper understanding of the problem by identifying the circumstances in which to adopt a particular method. Finally our study outlines what aspects of the problem are important to address for future improvements to this task.
2013
9781479908332
Video surveillance; group detection
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11562/663190
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