3D graphics system grouping surface primitives with and without specularity
US5777620A · kind A · utility
26Cited by
7References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 23, 1996 |
| Grant date | Jul 7, 1998 |
| Priority date | — |
| Expiry date | Jul 23, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T15/506
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Image data representing multi-dimensional objects are processed, wherein the objects are represented by a plurality of polygons. Lighting characteristics for the polygons are calculated in response to data representing light sources and lighting parameters defining coefficients of specular reflection and diffuse reflection. Not all polygons have significant levels of specular reflection. Advantage is taken of this and the apparatus is arranged to process polygons having significant levels of specular reflection in accordance with a first process while processing other polygons in accordance with a second process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.