Method and system for searching and verifying magnitude change events in video surveillance
US7555046B2 · kind B2 · utility
17Cited by
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20Claims
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Key dates
| Filing date | Jan 25, 2005 |
| Grant date | Jun 30, 2009 |
| Priority date | — |
| Expiry date | Nov 8, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T7/254
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for detecting events in a video sequence includes providing a video sequence, sampling the video sequence at regular intervals to form a series of snapshots of the sequence, measuring a similarity of each snapshot, measuring a similarity change between successive pairs of snapshots, wherein if a similarity change magnitude is greater than a predetermined threshold, a change event has been detected, verifying the change event to exclude a false positive, and completing the processing of the snapshot incorporating the verified change event.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.