Hierarchical Radiosity for Dynamic Environments
| dc.contributor.author | Shaw, Erin | en_US |
| dc.date.accessioned | 2015-02-15T16:46:52Z | |
| dc.date.available | 2015-02-15T16:46:52Z | |
| dc.date.issued | 1997 | en_US |
| dc.description.abstract | This paper extends the hierarchical radiosity method to environments in which geometry and surface attributes can be changed dynamically. New algorithms are presented for maintaining an appropriately-sized mesh and speeding the construction of the corresponding linear system. Mesh folding, the unrefinement of a mesh, is used to optimize mesh size while maintaining a specified error tolerance. Two new interactions are introduced: shadow links guide local shadow clean up after a change in geometry and ghost links guide global mesh folding after a change in surface attributes. The algorithms stabilize the memory requirements of dynamic scenes. Different types of interactions are analyzed to determine how they are affected by changes in geometry. A dynamic scene-partitioning scheme called a motion volume, used in conjunction with a three-dimensional clipping algorithm, provides a fast way to cull interactions that do not need to be updated. The algorithms are demonstrated on several sample scenes. | en_US |
| dc.description.number | 2 | en_US |
| dc.description.seriesinformation | Computer Graphics Forum | en_US |
| dc.description.volume | 16 | en_US |
| dc.identifier.doi | 10.1111/1467-8659.00127 | en_US |
| dc.identifier.issn | 1467-8659 | en_US |
| dc.identifier.pages | 107-118 | en_US |
| dc.identifier.uri | https://doi.org/10.1111/1467-8659.00127 | en_US |
| dc.publisher | Blackwell Publishers Ltd and the Eurographics Association | en_US |
| dc.title | Hierarchical Radiosity for Dynamic Environments | en_US |