| dc.contributor.author | Fan, Shaohua | en_US |
| dc.contributor.author | Chenney, Stephen | en_US |
| dc.contributor.author | Lai, Yu-chi | en_US |
| dc.contributor.editor | Kavita Bala and Philip Dutre | en_US |
| dc.date.accessioned | 2014-01-27T14:48:35Z | |
| dc.date.available | 2014-01-27T14:48:35Z | |
| dc.date.issued | 2005 | en_US |
| dc.identifier.isbn | 3-905673-23-1 | en_US |
| dc.identifier.issn | 1727-3463 | en_US |
| dc.identifier.uri | http://dx.doi.org/10.2312/EGWR/EGSR05/127-138 | en_US |
| dc.description.abstract | We present Metropolis Photon Sampling (MPS), a visual importance-driven algorithm for populating photon maps. Photon Mapping and other particle tracing algorithms fail if the photons are poorly distributed. Our approach samples light transport paths that join a light to the eye, which accounts for the viewer in the sampling process and provides information to improve photon storage. Paths are sampled with a Metropolis-Hastings algorithm that exploits coherence among important light paths. We also present a technique for including user selected paths in the sampling process without introducing bias. This allows a user to provide hints about important paths or reduce variance in specific parts of the image. We demonstrate MPS with a range of scenes and show quantitative improvements in error over standard Photon Mapping and Metropolis Light Transport. | en_US |
| dc.publisher | The Eurographics Association | en_US |
| dc.subject | Categories and Subject Descriptors (according to ACM CCS): I.3.7 [Computer Graphics]: Three-Dimensional Graphics and Realism Color, shading, shadowing, and texture | en_US |
| dc.title | Metropolis Photon Sampling with Optional User Guidance | en_US |
| dc.description.seriesinformation | Eurographics Symposium on Rendering (2005) | en_US |
