View-dependent rendering of parametric surfaces
US8384715B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2009 |
| Grant date | Feb 26, 2013 |
| Priority date | — |
| Expiry date | Dec 28, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T17/30
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Views of parametric surfaces are rendered. A set of parametric surface patches representing a parametric surface being rendered is projected onto a scene, producing a set of view-projected surface patches. Each view-projected surface patch is identified for either culling, subdivision or rendering. For patches which are identified for subdivision, the patches are recursively subdivided into sub-patches until for each sub-patch a prescribed screen-space projection of the sub-patch satisfies a prescribed screen-space error metric. Once the error metric is satisfied, the sub-patch is identified for rendering. Patches and sub-patches which have been identified for rendering are prepared and rendered.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.