Method for out-of core rendering of large 3D models
US6933946B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 7, 2003 |
| Grant date | Aug 23, 2005 |
| Priority date | — |
| Expiry date | Jun 23, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T17/005
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention is a method and system for interactive rendering of large polygonal environments on commodity PC hardware. The system allows a user to walk through a large model at interactive frame rates on machines with limited memory. It works by first creating a hierarchical spatial decomposition of the model on disk using a fast and incremental out-of-core preprocessing algorithm. At running time, the system and method uses an approximate from-point visibility algorithm to dynamically determine which parts of the model to retrieve from disk. Multiple threads and a speculative prefetching algorithm are used to improve frame rates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.