System and method providing subpixel-edge-offset-based determination of opacity
US6839463B1 · kind B1 · utility
22Cited by
12References
14Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 22, 2000 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Jul 22, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T7/194
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system is provided for selecting a foreground region of an image, given a set of pixels defining the boundary of the foreground region of the image. The system includes a component to determine a foreground value (F) and opacity value (a) for each pixel on the set wherein a is determined via a subpixel edge-offset to facilitate a separation the foreground region from background portions of the image. The foreground value (F) and opacity value (a) are then employed to smoothly mix the foreground region of the image with a subsequent image background region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.