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arXiv 2605.00517cs.CV
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PhysiGen:整合碰撞感知的物理约束以生成高保真的人-人交互

PhysiGen: Integrating Collision-Aware Physical Constraints for High-Fidelity Human-Human Interaction Generation

Sun Yat-sen University(中山大学);The Hong Kong University of Science and Technology(香港科学与技术大学);Shanghai Jiao Tong University(上海交通大学);Guilin University of Electronic Technology(桂林电子科技大学)

Nan Lei, Yuan-Ming Li, Ling-An Zeng, Liang Xu, Zhi-Wei Xia, Hui-Wen Huang, Fa-Ting Hong, Wei-Shi Zheng

AI总结:

本文提出PhysiGen方法,通过简化人体网格和优化碰撞区域,提升多人体交互生成的现实感和物理合理性。

摘要:

尽管文本驱动的3D人体运动合成取得了显著进展,生成逼真的多人物交互序列仍具挑战性。值得注意的是,身体相互穿透是数据采集到生成结果中普遍存在且严重影响真实性和可用性的问题。先前生成模型要么忽略该问题,要么引入计算成本高昂的网格级损失函数以缓解身体碰撞。在本文中,我们提出了一种通用且计算高效的优化策略,名为PhysiGen,用于显式整合碰撞感知的物理约束以生成人-人交互。具体而言,我们将高分辨率人体网格简化为几何体以大幅降低人与人碰撞检测的成本。此外,我们将碰撞区域作为优化方向的指导。PhysiGen具有即插即用的特性,可轻松集成到现有的人交互生成模型中。广泛的跨数据集和跨模型实验表明,我们的方法能有效减少相互穿透,并显著提高视觉一致性和物理合理性,相比最先进的方法。

英文摘要:

Despite substantial progress in text-driven 3D human motion synthesis, generating realistic multi-person interaction sequences remains challenging. Notably, body inter-penetration is a pervasive issue from both data acquisition to the generated results, which significantly undermines the realism and usability. Previous generative models either ignored this issue or introduced computationally expensive mesh-level loss functions to alleviate inter-body collisions. In this paper, we propose a general-purpose and computationally efficient optimization strategy named PhysiGen to explicitly integrate collision-aware physical constraints for human-human interaction generation. Specifically, we simplify the high-resolution human body mesh into geometric primitives to greatly reduce the cost of inter-person collision detection. Moreover, we identify the collision regions as the guidance of the optimization directions. PhysiGen is plug-and-play and can be readily integrated into existing human interaction generation models. Extensive cross-dataset and cross-model experiments show that our method can effectively reduce interpenetration and significantly improve visual coherence and physical plausibility compared to the state-of-the-art methods.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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