Improvements relating to event detection
US9165372B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 10, 2007 |
| Grant date | Oct 20, 2015 |
| Priority date | — |
| Expiry date | Jul 6, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/53
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.