z-buffer based interpenetrating object detection for antialiasing
US6999077B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | May 26, 2004 |
| Grant date | Feb 14, 2006 |
| Priority date | — |
| Expiry date | May 26, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2200/12
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Graphic processor compares z-buffer values of 3D objects to detect and mark interpenetrating pixels. Tag buffer stores marked values for antialiasing effectively by over-sampling, area-based, blending, alpha edge or other pixel-processing scheme. Performance is improved by selectively antialiasing at edges and/or interpenetrations. Cost is reduced by leveraging z-buffer storage therefor. Super-sampling antialiasing reduces sampling of select interpenetration elements, thereby avoiding processing entire image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.