PIAvatar: Physically Interactive Avatars via Deformation Gradient Decoupling
3D human avatars have shown impressive visual fidelity driven by pose-conditioned models, yet they still lack the physical ability required for interactions with each other and environments. Although recent studies have made various attempts to incorporate physical characteristics into 3D avatars, they only exhibit limited physical deformations, often leading to constrained interaction behaviors. To resolve this issue, we present PIAvatar, a framework to simultaneously enable physically aware interactions between avatar-avatar and avatar-environment, and a non-rigid deformable human body simulation. In this work, our key insight is to decouple kinematic velocity from deformation gradient....
| Authors | Sang-Hun Han, Min-Gyu Park, Jisu Shin et al. |
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| Primary category | cs.GR |
| Published | 19 June 2026 |
| Last updated at source | 30 June 2026 |
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