Gradient-Domain Bidirectional Path Tracing
| dc.contributor.author | Manzi, Marco | en_US |
| dc.contributor.author | Kettunen, Markus | en_US |
| dc.contributor.author | Aittala, Miika | en_US |
| dc.contributor.author | Lehtinen, Jaakko | en_US |
| dc.contributor.author | Durand, Frédo | en_US |
| dc.contributor.author | Zwicker, Matthias | en_US |
| dc.contributor.editor | Jaakko Lehtinen and Derek Nowrouzezahrai | en_US |
| dc.date.accessioned | 2015-06-23T05:04:22Z | |
| dc.date.available | 2015-06-23T05:04:22Z | |
| dc.date.issued | 2015 | en_US |
| dc.description.abstract | Gradient-domain path tracing has recently been introduced as an efficient realistic image synthesis algorithm. This paper introduces a bidirectional gradient-domain sampler that outperforms traditional bidirectional path tracing often by a factor of two to five in terms of squared error at equal render time. It also improves over unidirectional gradient-domain path tracing in challenging visibility conditions, similarly to how conventional bidirectional path tracing improves over its unidirectional counterpart. Our algorithm leverages a novel multiple importance sampling technique and an efficient implementation of a high-quality shift mapping suitable for bidirectional path tracing. We demonstrate the versatility of our approach in several challenging light transport scenarios. | en_US |
| dc.description.sectionheaders | Light Paths | en_US |
| dc.description.seriesinformation | Eurographics Symposium on Rendering - Experimental Ideas & Implementations | en_US |
| dc.identifier.doi | 10.2312/sre.20151168 | en_US |
| dc.identifier.pages | 65-74 | en_US |
| dc.identifier.uri | https://doi.org/10.2312/sre.20151168 | en_US |
| dc.publisher | The Eurographics Association | en_US |
| dc.subject | I.3.3 [Computer Graphics] | en_US |
| dc.subject | Picture/Image Generation | en_US |
| dc.subject | Line and curve generation | en_US |
| dc.title | Gradient-Domain Bidirectional Path Tracing | en_US |