让人体运动更真实，能自然互动动态物体和环境
InterPhys: Physics-aware Human Motion Synthesis in a Dynamic Scene
- 显式建模人与物、人与场景及身体内部受力，实现全链条物理交互
- 在复杂动态场景中生成更符合物理规律的运动，提升真实感
- 适合做影视动画、虚拟现实等需要逼真人体动作的场景
本文针对动态场景中物理感知的人体运动生成问题。现有方法因接触建模能力有限（通常仅限手部），常生成不合理的运动。本文提出一种物理感知的人体运动生成框架，显式建模包括人-物、人-场景及人体内力在内的全谱系作用力。通过施加软物理约束以保持力与力矩平衡，确保运动具有物理合理性。进一步提出一种连续距离驱动的新型力模型，可泛化至任意表面，捕捉与静态环境及动态移动物体的交互。大量实验表明，该方法显著提升运动的物理合理性，并在复杂场景中具有良好泛化能力，为物理一致的人体运动生成设立了新基准。
原文摘要 · Abstract (English)
This paper tackles the problem of physics-aware human motion synthesis in a dynamic scene. Unlike existing works which mainly tend to generate physically unrealistic motions due to limited contact modeling, typically restricted to hands, in this paper, we introduce a physics-aware human motion generation framework that explicitly models the full spectrum of human-related forces, including human-object, human-scene, and internal body dynamics.~Our method imposes soft physical constraints to maintain force and torque balance, ensuring physically grounded motion synthesis. We further propose a novel continuous distance-based force model that generalizes contact modeling to arbitrary surfaces, capturing interactions not only with static environments but also with dynamic, moving objects. Extensive experiments show that our approach significantly improves physical plausibility and generalizes well to complex scenes, setting a new benchmark for physically consistent human motion generation.
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