Directing indirect illumination to visibly influenced scene regions
US8773434B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 2011 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Oct 2, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T15/506
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method, apparatus, system, and computer readable storage medium provide the ability to conduct global illumination. A 3D model of a scene is obtained in a computer graphics application. A camera location in the scene is identified and paths emitted from the camera location are traced into the scene (by recording hit points along the paths). The paths are filtered by selecting those paths that can receive light from a light source (i.e., paths whose next path segment hits the light source). Targets are identified based on the hit points. Photons are generated from the light source and follow a corresponding photon path. Each photon path is evaluated to determine if it intersects with a target, in which case it is recorded. A view of the scene is rendered based on the recorded photons.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.