Hybrid Mesh-volume LoDs for All-scale Pre-filtering of Complex 3D Assets

dc.contributor.authorLoubet, Guillaumeen_US
dc.contributor.authorNeyret, Fabriceen_US
dc.contributor.editorLoic Barthe and Bedrich Benesen_US
dc.date.accessioned2017-04-22T16:27:16Z
dc.date.available2017-04-22T16:27:16Z
dc.date.issued2017
dc.description.abstractWe 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.number2
dc.description.sectionheadersApparent Materials
dc.description.seriesinformationComputer Graphics Forum
dc.description.volume36
dc.identifier.doi10.1111/cgf.13138
dc.identifier.issn1467-8659
dc.identifier.pages431-442
dc.identifier.urihttps://doi.org/10.1111/cgf.13138
dc.identifier.urihttps://diglib.eg.org:443/handle/10.1111/cgf13138
dc.publisherThe Eurographics Association and John Wiley & Sons Ltd.en_US
dc.subjectI.3.7 [Computer Graphics]
dc.subjectThree Dimensional Graphics and Realism
dc.subjectRaytracing
dc.titleHybrid Mesh-volume LoDs for All-scale Pre-filtering of Complex 3D Assetsen_US
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