Estimating motion of an event captured using a digital video camera
US9256789B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2008 |
| Grant date | Feb 9, 2016 |
| Priority date | — |
| Expiry date | Mar 13, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/44
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An event aware video system (EAVS) is to capture video frames during a first time period and process events in the video frames before transferring the processed data to a central computing system. The EAVS may establish a present no-event frame from the video frames by marking the last frame as the present no-event frame if the difference between adjacent pair of video frames is less than a threshold value. The EAVS may establish an event frame, wherein a present frame captured after establishing the no-event frame is marked as the event frame if the difference between the present frame and a previous frame is greater than the threshold value. The EAVS may provide event information including motion vectors to a central computing system by performing one-dimensional search on a moving object of the event frame, wherein the motion vectors may represent displacement of objects moving within the moving object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.