Virtual Elastic Objects

We present Virtual Elastic Objects (VEOs): virtual objects that not only look like their real-world counterparts but also behave like them, even when subject to novel interactions. Achieving this presents multiple challenges: not only do objects have to be captured including the physical forces acti...

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Bibliographic Details
Published in:Proceedings (IEEE Computer Society Conference on Computer Vision and Pattern Recognition. Online) pp. 15806 - 15816
Main Authors: Chen, Hsiao-yu, Tretschk, Edith, Stuyck, Tuur, Kadlecek, Petr, Kavan, Ladislav, Vouga, Etienne, Lassner, Christoph
Format: Conference Proceeding
Language:English
Published: IEEE 01.06.2022
Subjects:
3D from multi-view and sensors; Vision + X
Atmospheric modeling
Deformable models
Nonhomogeneous media
Rendering (computer graphics)
Shape
Simulation
Three-dimensional displays
ISSN:1063-6919
Online Access:Get full text
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Summary:We present Virtual Elastic Objects (VEOs): virtual objects that not only look like their real-world counterparts but also behave like them, even when subject to novel interactions. Achieving this presents multiple challenges: not only do objects have to be captured including the physical forces acting on them, then faithfully reconstructed and rendered, but also plausible material parameters found and simulated. To create VEOs, we built a multi-view capture system that captures objects under the influence of a compressed air stream. Building on recent advances in model-free, dynamic Neural Radiance Fields, we reconstruct the objects and corresponding deformation fields. We propose to use a differentiable, particle-based simulator to use these deformation fields to find representative material parameters, which enable us to run new simulations. To render simulated objects, we devise a method for integrating the simulation results with Neural Radiance Fields. The resulting method is applicable to a wide range of scenarios: it can handle objects composed of inhomogeneous material, with very different shapes, and it can simulate interactions with other virtual objects. We present our results using a newly collected dataset of 12 objects under a variety of force fields, which will be made available upon publication.
ISSN:1063-6919
DOI:10.1109/CVPR52688.2022.01537