IMPROVEMENTS RELATING TO EVENT DETECTION

IMPROVEMENTS RELATING TO EVENT DETECTION

A method of event detection for detecting the occurrence of an event in a crowd is disclosed. The method includes the steps of providing video footage of the crowd, which video footage includes a series of image frames; calculating a series of values representative of the crowd dynamics, which serie...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: WILLIAMS, MARK LAWRENCE
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ALARM SYSTEMS
CALCULATING
COMPUTING
COUNTING
HANDLING RECORD CARRIERS
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
ORDER TELEGRAPHS
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
SIGNALLING
SIGNALLING OR CALLING SYSTEMS
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Beschreibung
Zusammenfassung:A method of event detection for detecting the occurrence of an event in a crowd is disclosed. The method includes the steps of providing video footage of the crowd, which video footage includes a series of image frames; calculating a series of values representative of the crowd dynamics, which series of values is calculated in dependence on the series of image frames; analyzing the series of values to identify any discrepancies occurring in the series of values; and, in response to identifying a discrepancy, providing an output signal to alert an operator that an event has been detected. In preferred embodiments, the series of values are related to the complexity of the crowd dynamics. Apparatus suitable for carrying out such a method is also disclosed.