[论文] PowerSim: Differentiable Physics Simulation and Rendering with Power D...

论文概要

研究领域: CV
作者: Trong-Tung Nguyen, Anand Bhattad
发布时间: 2026-09-29
arXiv: 2609.38153

中文摘要

我们提出PowerSim，一种为PowerFoam的幂图（power diagram）3D表示引入物理基础可微分动力学的方法。PowerSim通过利用两者之间的自然对齐，将预训练的PowerFoam场景直接耦合到物质点法（MPM）：每个图元的几何和外观属性与MPM在物体变形时已追踪的量紧密对应。因此，模拟运动可以直接驱动场景的几何和外观变化，无需中间的辅助表示。在该框架基础上，我们在真实和合成场景上实现了一系列应用：（1）模拟静态场景在用户交互下的响应；（2）恢复空间变化的材料场；（3）将独立捕获场景的图元合成为单一可仿真场景；（4）光线追踪反射随物体变形一致地更新。我们的结果表明，PowerSim在物理基础动力学方面优于先前框架，同时解锁了独特优势——如动态场景上的二次射线光照效果。结果最佳观看方式为项目网站。

原文摘要

We introduce PowerSim, a method to bring physically grounded, differentiable dynamics to PowerFoam's power diagram based 3D representation. PowerSim directly couples a pre-trained PowerFoam scene to the Material Point Method (MPM) by exploiting a natural alignment between the two: the geometric and appearance properties of each primitive correspond closely to the quantities MPM already tracks as an object deforms. Consequently, simulated motion can drive the scene's geometry and appearance directly, without an auxiliary representation in between. Built on this framework, we enable a range of applications on real and synthetic scenes: (1) simulating a static scene under user interaction, (2) recovering spatially varying material fields, (3) compositing primitives from independently captured...

自动采集于 2026-10-01

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