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Crowd Security Detection based on Entropy Model
Ying Zhao
Mengqi Yuan
Guofeng Su
Tao Chen
L. Palen
M. Buscher
T. Comes
A. Hughes
Identifying the terror attack, illegal public gathering or other mass events risks by utilizing cameras is an important concern both in crowd security area and in pattern recognition research area. This paper provides a physical entropy model to measure the crowd security level.The entropy model was created by identifying individuals?moving velocity and the related probability. The individuals are represented by Harris Corners in videos, thus to avoid the time-consuming human recognition task. Simulation experiment and video detection experiments were conducted, verified that in the disordered state, the entropy is higher; while in ordered state, the entropy is much lower; when the crowd security has a sudden change, the entropy will change. It was verified that the entropy is the applicable indicator of crowd security. By recognizing the entropy mutation, it is possible to automatically detect the abnormal crowd behavior and to set the warning alarm.
urn:ISBN:9788271177881
openurl:?ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fidl.iscram.org%2F&genre=proceeding&title=Crowd%20Security%20Detection%20based%20on%20Entropy%20Model&stitle=ISCRAM%202015&issn=2411-3387&isbn=9788271177881&date=2015&aulast=Ying%20Zhao&au=Mengqi%20Yuan&au=Guofeng%20Su&au=Tao%20Chen&pub=University%20of%20Agder%20%28UiA%29&place=Kristiansand%2C%20Norway&sid=refbase%3AISCRAM
url:http://idl.iscram.org/show.php?record=1180
citekey:YingZhao_etal2015
citation:Ying Zhao, Mengqi Yuan, Guofeng Su, & Tao Chen. (2015). Crowd Security Detection based on Entropy Model. In L. Palen, M. Buscher, T. Comes, & A. Hughes (Eds.), ISCRAM 2015 Conference Proceedings ? 12th International Conference on Information Systems for Crisis Response and Management. Kristiansand, Norway: University of Agder (UiA).
2015
ConferencePaper
text
Crowd mutation
crowd security
entropy
warning alarm
file:http://idl.iscram.org/files/yingzhao/2015/1180_YingZhao_etal2015.pdf
University of Agder (UiA)
English
2411-3387
ISCRAM 2015 Conference Proceedings ? 12th International Conference on Information Systems for Crisis Response and Management
2015
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