Updating animated images represented by scene graphs
US6487565B1 · kind B1 · utility
65Cited by
11References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1998 |
| Grant date | Nov 26, 2002 |
| Priority date | — |
| Expiry date | Dec 29, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T15/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Each frame in an animated graphics sequence has a hierarchical scene graph. Graph elements have creation timestamps that mark them as dirty, requiring rendering, or constant, not requiring rendering anew for the current frame. If an aggregate element is constant, it is rendered as a whole, without investigating its child elements. If dirty elements meet certain criteria, they are merged for rendering as a single unit. In this way, the scene areas to be rendered have variable positions and sizes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.