Affinification: A Fine Approximation of Deformations

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dc.contributor.authorMercier-Aubin, Alexandre
dc.contributor.authorSchneider, Teseo
dc.contributor.authorKry, Paul
dc.contributor.authorAndrews, Sheldon
dc.contributor.editorMasia, Belen
dc.contributor.editorThies, Justus
dc.date.accessioned2026-04-17T13:36:39Z
dc.date.available2026-04-17T13:36:39Z
dc.date.issued2026
dc.description.abstractWe introduce affinification, a novel method for accelerating physics-based animation of elastic solids. During a time-dependent simulation, our method automatically partitions the space into affine and elastic regions depending on the deformation. As such, we capture localized deformations while significantly reducing computational costs with larger regions of model reduction. We design a new clustering method based on deformation rates to capture affinely deforming regions, and explore multiple heuristics for seeding, pattern generation, and the impact of physical parameters on coarsened regions. We compare our method with the ground truth, showing performance increasing with resolution and recorded simulations up to 17× faster compared to elastic simulations, while retaining similar levels of visual fidelity.
dc.description.number2
dc.description.sectionheadersSolving Deformation: Numerical Methods for Elastic Simulation
dc.description.seriesinformationComputer Graphics Forum
dc.description.volume45
dc.identifier.doi10.1111/cgf.70382
dc.identifier.issn1467-8659
dc.identifier.pages13 pages
dc.identifier.urihttps://diglib.eg.org/handle/10.1111/cgf70382
dc.identifier.urihttps://doi.org/10.1111/cgf.70382
dc.publisherThe Eurographics Association and John Wiley & Sons Ltd.
dc.rightsCC-BY-4.0
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectCollisions
dc.subjectPhysics-based animation
dc.subjectSoft bodies
dc.subjectAffine bodies
dc.subjectContact
dc.subjectAdaptive methods
dc.subjectCoarsening
dc.subjectSubspace simulation
dc.titleAffinification: A Fine Approximation of Deformations
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