Procedural Physically based BRDF for Real-Time Rendering of Glints
| dc.contributor.author | Chermain, Xavier | en_US |
| dc.contributor.author | Sauvage, Basile | en_US |
| dc.contributor.author | Dischler, Jean-Michel | en_US |
| dc.contributor.author | Dachsbacher, Carsten | en_US |
| dc.contributor.editor | Eisemann, Elmar and Jacobson, Alec and Zhang, Fang-Lue | en_US |
| dc.date.accessioned | 2020-10-29T18:50:52Z | |
| dc.date.available | 2020-10-29T18:50:52Z | |
| dc.date.issued | 2020 | |
| dc.description.abstract | Physically based rendering of glittering surfaces is a challenging problem in computer graphics. Several methods have proposed off-line solutions, but none is dedicated to high-performance graphics. In this work, we propose a novel physically based BRDF for real-time rendering of glints. Our model can reproduce the appearance of sparkling materials (rocks, rough plastics, glitter fabrics, etc.). Compared to the previous real-time method [ZK16], which is not physically based, our BRDF uses normalized NDFs and converges to the standard microfacet BRDF [CT82] for a large number of microfacets. Our method procedurally computes NDFs with hundreds of sharp lobes. It relies on a dictionary of 1D marginal distributions: at each location two of them are randomly picked and multiplied (to obtain a NDF), rotated (to increase the variety), and scaled (to control standard deviation/roughness). The dictionary is multiscale, does not depend on roughness, and has a low memory footprint (less than 1 MiB) | en_US |
| dc.description.number | 7 | |
| dc.description.sectionheaders | Materials and Shading Models | |
| dc.description.seriesinformation | Computer Graphics Forum | |
| dc.description.volume | 39 | |
| dc.identifier.doi | 10.1111/cgf.14141 | |
| dc.identifier.issn | 1467-8659 | |
| dc.identifier.pages | 243-253 | |
| dc.identifier.uri | https://doi.org/10.1111/cgf.14141 | |
| dc.identifier.uri | https://diglib.eg.org:443/handle/10.1111/cgf14141 | |
| dc.publisher | The Eurographics Association and John Wiley & Sons Ltd. | en_US |
| dc.subject | Computing methodologies | |
| dc.subject | Reflectance modeling | |
| dc.title | Procedural Physically based BRDF for Real-Time Rendering of Glints | en_US |