Hedman, LPJ;
Karras, T;
Lehtinen, J;
(2016)
Sequential Monte Carlo Instant Radiosity.
In:
(Proceedings) I3D '16 - Proceedings of the 20th ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games.
(pp. pp. 121-128).
ACM: New York, USA.
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Abstract
Instant Radiosity and its derivatives are interactive methods for efficiently estimating global (indirect) illumination. They represent the last indirect bounce of illumination before the camera as the composite radiance field emitted by a set of virtual point light sources (VPLs). In complex scenes, current algorithms suffer from a difficult combination of two issues: it remains a challenge to distribute VPLs in a manner that simultaneously gives a high-quality indirect illumination solution for each frame, and does so in a temporally coherent manner. We address both issues by building, and maintaining over time, an adaptive and temporally coherent distribution of VPLs in locations where they bring indirect light to the image. We introduce a novel heuristic sampling method that strives to only move as few of the VPLs between frames as possible. The result is, to the best of our knowledge, the first interactive global illumination algorithm that works in complex, highly-occluded scenes, suffers little from temporal flickering, supports moving cameras and light sources, and is output-sensitive in the sense that it places VPLs in locations that matter most to the final result.
| Type: | Proceedings paper |
|---|---|
| Title: | Sequential Monte Carlo Instant Radiosity |
| Event: | I3D '16 - Proceedings of the 20th ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games |
| Location: | Redmond, Washington, USA |
| Dates: | 27 February 2016 - 28 February 2016 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1145/2856400.2856406 |
| Publisher version: | https://doi.org/10.1145/2856400.2856406 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10057498 |
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