Transparency-conserving system, method and computer program product to generate and blend images
US7978204B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 26, 2006 |
| Grant date | Jul 12, 2011 |
| Priority date | — |
| Expiry date | Jun 30, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/06
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A1A system embodying the invention includes a controlling device and a set of rendering devices, with the effect that the controlling device can distribute a set of objects to the rendering devices. Each rendering device computes a (2D) image in response to the objects assigned to it, including computing multiple overlapping images and using a graphics processor to blend those images into a resultant image. To interface with the graphics processor, each rendering device spoofs the α-value with a pixel feature other than opacity (opacity is expected by the graphics processor), with the effect that the graphics processor delivers useful α-values, while still delivering correct color values, for each pixel. This has the effect that the resultant images include transparency information sufficient to combine them using transparency blending.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.