Multi-Scale Appearance Modeling of Granular Materials with Continuously Varying Grain Properties

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dc.contributor.authorZhang, Chengen_US
dc.contributor.authorZhao, Shuangen_US
dc.contributor.editorDachsbacher, Carsten and Pharr, Matten_US
dc.date.accessioned2020-06-28T15:27:28Z
dc.date.available2020-06-28T15:27:28Z
dc.date.issued2020
dc.description.abstractMany real-world materials such as sand, snow, salt, and rice are comprised of large collections of grains. Previously, multiscale rendering of granular materials requires precomputing light transport per grain and has difficulty in handling materials with continuously varying grain properties. Further, existing methods usually describe granular materials by explicitly storing individual grains, which becomes hugely data-intensive to describe large objects, or replicating small blocks of grains, which lacks the flexibility to describe materials with grains distributed in nonuniform manners. We introduce a new method to render granular materials with continuously varying grain optical properties efficiently. This is achieved using a novel symbolic and differentiable simulation of light transport during precomputation. Additionally, we introduce a new representation to depict large-scale granular materials with complex grain distributions. After constructing a template tile as preprocessing, we adapt it at render time to generate large quantities of grains with user-specified distributions. We demonstrate the effectiveness of our techniques using a few examples with a variety of grain properties and distributions.en_US
dc.description.sectionheadersNatural Appearance
dc.description.seriesinformationEurographics Symposium on Rendering - DL-only Track
dc.identifier.doi10.2312/sr.20201134
dc.identifier.isbn978-3-03868-117-5
dc.identifier.issn1727-3463
dc.identifier.pages25-37
dc.identifier.urihttps://doi.org/10.2312/sr.20201134
dc.identifier.urihttps://diglib.eg.org:443/handle/10.2312/sr20201134
dc.publisherThe Eurographics Associationen_US
dc.rightsAttribution 4.0 International License
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectComputing methodologies
dc.subjectRendering
dc.subjectRay tracing
dc.titleMulti-Scale Appearance Modeling of Granular Materials with Continuously Varying Grain Propertiesen_US
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