Apparatus and method for performing lighting calculations for surfaces of three-dimensional objects
US5563989A · kind A · utility
70Cited by
8References
42Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 30, 1993 |
| Grant date | Oct 8, 1996 |
| Priority date | — |
| Expiry date | Sep 30, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T15/506
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Image data representing multi-dimensional objects are processed by calculating lighting characteristics in response to lighting parameters of surfaces and the parameters of light sources. Surface highlight characteristics are produced by a non-linear process. However, the non-linear process is performed without reference to a view position. Processing highlight characteristics without reference to the view position allows characteristics to be produced without transforming the view position and without calculating additional vectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.