Ray tracing method and apparatus for projecting rays through an object represented by a set of infinite surfaces
US5596685A · kind A · utility
15Cited by
11References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 26, 1994 |
| Grant date | Jan 21, 1997 |
| Priority date | — |
| Expiry date | Jul 26, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T15/80
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Each object in a 3-dimensional image to be displayed may be represented by a set of infinite surfaces. Each elementary area of a screen on which the image is to be displayed has a ray projected through it onto the 3-dimensional image. The location of the intersection of the projected ray with each surface is then determined and from these locations it is determined whether any intersected surface is visible at that elementary area. The elementary area is then shaded for display in dependence on the result of the determination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.