InterMimic: Towards Universal Whole-Body Control for Physics-Based Human-Object Interactions

• URL: http://arxiv.org/abs/2502.20390v1
• Date: Thu, 27 Feb 2025 18:59:12 GMT
• Title: InterMimic: Towards Universal Whole-Body Control for Physics-Based Human-Object Interactions
• Authors: Sirui Xu, Hung Yu Ling, Yu-Xiong Wang, Liang-Yan Gui,
• Abstract summary: We introduce InterMimic, a framework that enables a single policy to robustly learn from hours of imperfect MoCap data.<n>Our experiments demonstrate that InterMimic produces realistic and diverse interactions across multiple HOI datasets.
• Score: 27.225777494300775
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Achieving realistic simulations of humans interacting with a wide range of objects has long been a fundamental goal. Extending physics-based motion imitation to complex human-object interactions (HOIs) is challenging due to intricate human-object coupling, variability in object geometries, and artifacts in motion capture data, such as inaccurate contacts and limited hand detail. We introduce InterMimic, a framework that enables a single policy to robustly learn from hours of imperfect MoCap data covering diverse full-body interactions with dynamic and varied objects. Our key insight is to employ a curriculum strategy -- perfect first, then scale up. We first train subject-specific teacher policies to mimic, retarget, and refine motion capture data. Next, we distill these teachers into a student policy, with the teachers acting as online experts providing direct supervision, as well as high-quality references. Notably, we incorporate RL fine-tuning on the student policy to surpass mere demonstration replication and achieve higher-quality solutions. Our experiments demonstrate that InterMimic produces realistic and diverse interactions across multiple HOI datasets. The learned policy generalizes in a zero-shot manner and seamlessly integrates with kinematic generators, elevating the framework from mere imitation to generative modeling of complex human-object interactions.

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