Device and method for compositing video planes
US9355493B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 31, 2007 |
| Grant date | May 31, 2016 |
| Priority date | — |
| Expiry date | Apr 16, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T15/503
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A device and method of forming a video frame from a video stream made up of a multiplexed plurality of sub-streams is disclosed. The method includes forming a foreground plane, forming a mask that represents opaque pixels in the foreground plane, and forming an underlying plane from at least one of the sub-streams and extracting a transparency value associated with each pixel in the foreground and underlying planes. Only those pixels in the underlying and foreground planes not covered by the mask, are blended in accordance with their associated transparency value in a buffer. The buffer is populated with opaque pixels from the foreground plane, at pixel locations corresponding to the mask.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.