Foreground/background segmentation in digital images
US7868922B2 · kind B2 · utility
37Cited by
75References
40Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2006 |
| Grant date | Jan 11, 2011 |
| Priority date | — |
| Expiry date | May 6, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20224
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An implementation efficient method of distinguishing between foreground and background regions of a digital image of a scene includes capturing two images of nominally the same scene and storing the captured images in DCT-coded format. The first image is taken with the foreground more in focus than the background and the second image is taken with the background more in focus than the foreground. Regions of the first image are assigned as foreground or background according to whether the sum of selected higher order DCT coefficients decreases or increases for the equivalent regions of the second image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.