用低成本可穿戴传感器+生成数据,精准识别腰椎运动模式。
Assessing Low Back Movement with Motion Tape Sensor Data Through Deep Learning
- 用条件生成模型合成传感器数据,弥补样本少噪声大的问题。
- 在小规模噪声数据上实现顶尖分类准确率,超越现有方法。
- 适合临床远程评估腰痛患者动作,实用性强。
腰痛是影响广泛的重大健康问题,特定腰椎动作常会加剧症状。准确评估这些动作对制定物理治疗方案至关重要,但远程监测患者日常活动仍具挑战。高精度动作捕捉设备虽能分类动作,却因成本高、不便携难以用于真实生活场景。新型织物传感设备 Motion Tape(MT)具备低成本与便携性优势,但其数据集规模小且易受噪声干扰。本文提出 Motion-Tape Augmentation Inference Model(MT-AIM),一种基于深度学习的分类框架,通过条件生成模型合成目标动作的合成数据,并引入关节运动学作为额外特征。该方法结合合成数据生成与特征增强,显著提升分类性能,在有限且嘈杂的 MT 数据上达到当前最优表现,有效弥合生理传感与动作分析之间的差距。
原文摘要 · Abstract (English)
Back pain is a pervasive issue affecting a significant portion of the population, often worsened by certain movements of the lower back. Assessing these movements is important for helping clinicians prescribe appropriate physical therapy. However, it can be difficult to monitor patients' movements remotely outside the clinic. High-fidelity data from motion capture sensors can be used to classify different movements, but these sensors are costly and impractical for use in free-living environments. Motion Tape (MT), a new fabric-based wearable sensor, addresses these issues by being low cost and portable. Despite these advantages, novelty and variability in sensor stability make the MT dataset small scale and inherent to noise. In this work, we propose the Motion-Tape Augmentation Inference Model (MT-AIM), a deep learning classification pipeline trained on MT data. In order to address the challenges of limited sample size and noise present within the MT dataset, MT-AIM leverages conditional generative models to generate synthetic MT data of a desired movement, as well as predicting joint kinematics as additional features. This combination of synthetic data generation and feature augmentation enables MT-AIM to achieve state-of-the-art accuracy in classifying lower back movements, bridging the gap between physiological sensing and movement analysis.
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