Method for detecting short term unusual events in videos
US7327885B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2003 |
| Grant date | Feb 5, 2008 |
| Priority date | — |
| Expiry date | Apr 12, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H60/59
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method detects short term, unusual events in a video. First, features are extracted features from the audio and the video portions of the video. Segments of the video are labeled according to the features. A global sliding window is applied to the labeled segments to determine global characteristics over time, while a local sliding window is applied only to the labeled segments of the global sliding window to determine local characteristic over time. The local window is substantially shorter in time than the global window. A distance between the global and local characteristic is measured to determine occurrences of the unusual short time events.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.