MagShield通过检测与纠正磁干扰，提升稀疏惯性动捕在复杂环境下的精度。
MagShield: Towards Better Robustness in Sparse Inertial Motion Capture Under Magnetic Disturbances
- 采用多惯性单元联合分析检测磁干扰，再用人体运动先验修正姿态误差。
- 实验表明其显著提升磁干扰下动作捕捉的准确性，兼容多数现有稀疏动捕系统。
- 适合需要高鲁棒性的工业动捕、虚拟现实等场景使用。
本文提出一种名为MagShield的新方法，用于解决稀疏惯性动捕（MoCap）系统在磁干扰环境下的问题。现有惯性测量单元（IMU）在磁干扰环境中易产生姿态估计误差，限制了其在真实场景中的应用。MagShield采用“检测-修正”策略，通过多IMU联合分析检测磁干扰，并利用人体运动先验纠正姿态误差。该方法可集成至大多数现有稀疏惯性动捕系统中，在磁干扰环境下显著提升动作捕捉精度，且表现出良好的跨系统兼容性。实验验证了其有效性与普适性。
原文摘要 · Abstract (English)
This paper proposes a novel method called MagShield, designed to address the issue of magnetic interference in sparse inertial motion capture (MoCap) systems. Existing Inertial Measurement Unit (IMU) systems are prone to orientation estimation errors in magnetically disturbed environments, limiting their practical application in real-world scenarios. To address this problem, MagShield employs a "detect-then-correct" strategy, first detecting magnetic disturbances through multi-IMU joint analysis, and then correcting orientation errors using human motion priors. MagShield can be integrated with most existing sparse inertial MoCap systems, improving their performance in magnetically disturbed environments. Experimental results demonstrate that MagShield significantly enhances the accuracy of motion capture under magnetic interference and exhibits good compatibility across different sparse inertial MoCap systems.
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