Method and apparatus for generating a reference image from an image sequence
US5963272A · kind A · utility
13Cited by
10References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 30, 1996 |
| Grant date | Oct 5, 1999 |
| Priority date | — |
| Expiry date | Oct 30, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/507
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A locally-adaptive method and apparatus for constructing a reference image containing only the background from an image sequence containing moving or temporarily-stationary objects. Specifically, the apparatus contains a sample mask selector and a reference updater. The selector generates a mask which is used by the updated to perform updating of a reference image using only portions of the input image that contain background imagery. The updater enhances the masking function using a statistical analysis to avoid updating pixels using non-background imagery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.