Method for preventing selected pixels in a background image from showing through corresponding pixels in a transparency layer
US9514558B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 26, 2015 |
| Grant date | Dec 6, 2016 |
| Priority date | — |
| Expiry date | Oct 26, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2210/62
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention converts an image into a transparency, or “foreground image layer”, on which the readability of text and other detail is preserved after compositing with a background, while maintaining color information of broad areas of the image. In an embodiment, a matte is determined for the background image to reduce transparencies in the foreground layer, so as to prevent irrelevant parts of the background image from showing through. This is in distinction to only using the original foreground image data (prior to its transformation to a layer) to compute a matte (or mask, or alpha channel) to form a foreground layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.