Interactive Monte-Carlo Ray-Tracing Upsampling
| dc.contributor.author | Boughida, Malik | en_US |
| dc.contributor.author | Groueix, Thibault | en_US |
| dc.contributor.author | Boubekeur, Tamy | en_US |
| dc.contributor.editor | Luis Gonzaga Magalhaes and Rafal Mantiuk | en_US |
| dc.date.accessioned | 2016-04-26T07:50:48Z | |
| dc.date.available | 2016-04-26T07:50:48Z | |
| dc.date.issued | 2016 | en_US |
| dc.description.abstract | We propose a practical method to approximate global illumination at interactive framerates for dynamic scenes. We address multi-bounce, visibility-aware indirect lighting, for diffuse to moderately glossy materials, relying on GPU-accelerated raytracing for this purpose. While Monte-Carlo ray-tracing algorithms offer unbiased results, they produce images which are, under interactive constraints, extremely noisy, even with GPU acceleration. Unfortunately, filtering them to reach visual appeal induces a large kernel, which is not compatible with interactive framerate. We address this problem using a simple downsampling approach. First, we trace indirect paths on a uniformly distributed subset of pixels, decorrelating diffuse and specular components of lighting. Then, we perform a joint bilateral upsampling on both components, taking inspiration from deferred shading by driving this upsampling with a full-resolution G-Buffer. Our solution provides smooth results, does not require any pre-computations, and is both easy to implement and flexible, as it can be used with any generation strategy for indirect rays. | en_US |
| dc.description.sectionheaders | Posters | en_US |
| dc.description.seriesinformation | EG 2016 - Posters | en_US |
| dc.identifier.doi | 10.2312/egp.20161048 | en_US |
| dc.identifier.issn | 1017-4656 | en_US |
| dc.identifier.pages | 23-24 | en_US |
| dc.identifier.uri | https://doi.org/10.2312/egp.20161048 | en_US |
| dc.publisher | The Eurographics Association | en_US |
| dc.subject | I.3.3 [Computer Graphics] | en_US |
| dc.subject | Three Dimensional Graphics and Realism | en_US |
| dc.subject | Raytracing | en_US |
| dc.title | Interactive Monte-Carlo Ray-Tracing Upsampling | en_US |