Hybrid Mesh-volume LoDs for All-scale Pre-filtering of Complex 3D Assets
| dc.contributor.author | Loubet, Guillaume | en_US |
| dc.contributor.author | Neyret, Fabrice | en_US |
| dc.contributor.editor | Loic Barthe and Bedrich Benes | en_US |
| dc.date.accessioned | 2017-04-22T16:27:16Z | |
| dc.date.available | 2017-04-22T16:27:16Z | |
| dc.date.issued | 2017 | |
| dc.description.abstract | We address the problem of constructing appearance-preserving level of details (LoDs) of complex 3D models such as trees. We propose a hybrid method that combines the strengths of mesh and volume representations. Our main idea is to separate macroscopic (i.e. larger than the target spatial resolution) and microscopic (sub-resolution) surfaces at each scale and to treat them differently, because meshes are very efficient at representing macroscopic surfaces while sub-resolution geometry benefits from volumetric approximations. We introduce a new algorithm that detects the macroscopic surfaces of a mesh for a given resolution. We simplify these surfaces with edge collapses and we provide a method for pre-filtering their normal distributions and albedos. To approximate microscopic details, we use a heterogeneous microflake participating medium and we introduce a new artifact-free voxelization algorithm that preserves local occlusion. Thanks to our macroscopic surface analysis, our algorithm is fully automatic and it generates seamless LoDs at arbitrarily coarse resolutions for a wide range of 3D models. | en_US |
| dc.description.number | 2 | |
| dc.description.sectionheaders | Apparent Materials | |
| dc.description.seriesinformation | Computer Graphics Forum | |
| dc.description.volume | 36 | |
| dc.identifier.doi | 10.1111/cgf.13138 | |
| dc.identifier.issn | 1467-8659 | |
| dc.identifier.pages | 431-442 | |
| dc.identifier.uri | https://doi.org/10.1111/cgf.13138 | |
| dc.identifier.uri | https://diglib.eg.org:443/handle/10.1111/cgf13138 | |
| dc.publisher | The Eurographics Association and John Wiley & Sons Ltd. | en_US |
| dc.subject | I.3.7 [Computer Graphics] | |
| dc.subject | Three Dimensional Graphics and Realism | |
| dc.subject | Raytracing | |
| dc.title | Hybrid Mesh-volume LoDs for All-scale Pre-filtering of Complex 3D Assets | en_US |