Video movement detection
US4240109A · kind A · utility
25Cited by
1References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 1979 |
| Grant date | Dec 16, 1980 |
| Priority date | — |
| Expiry date | Feb 27, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/01
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A movement detection method and system capable of detecting picture point movement in portions of a picture in the presence of noise. Each picture point within the frame in turn is examined with a corresponding picture point from the previous frame to detect when movement has occurred for that particular picture point. To distinguish between noise and movement, a number of selected picture points adjacent the picture point are also examined to see if movement is occurring. By examining a number of picture joints noise tends to be attenuated while movement is not, so that true movement can be detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.