论文标题
用于上限假体控制和康复的虚拟和增强基于现实的辅助界面
Virtual and Augmented Reality-Based Assistive Interfaces for Upper-limb Prosthesis Control and Rehabilitation
论文作者
论文摘要
功能性的上限假体训练可以提高用户在控制假体方面的表现，并已纳入有需要的人的职业治疗中。近年来，虚拟现实（VR）和增强现实（AR）技术已被证明是提高康复假体培训系统的便利性的有希望的途径。但是，与传统的假体工具相比，VR或AR辅助工具的全面疗效和有效性是否足够，如果没有，是否可以通过纳入其他技术范式来进行增强。 这项工作首先提出了我们为假体控制和培训开发的混合现实系统。在类似的AR和VR环境中，涉及五个健全的受试者以执行三维对象操纵任务。应用多个评估指标来评估两个范式内的受试者表现。基于比较分析，我们发现基于VR的环境可以促进更有效的运动以及更高的任务完成率和路径效率，而AR范式允许受试者可以使用较短的时间来执行运动任务。进行了另一项研究以评估与现实世界中AR相关假体控制系统的效率和可行性，以及是否可以应用任何技术添加来改善基于AR的系统。三个健全的受试者参与了实验，以在a）物理环境中执行对象操纵任务，b）aR-by-bypass环境以及c）aR-ar-with-bypass环境。根据从评估中获得的结果，我们得出结论，尽管我们的基于AR的系统适度落后于物理系统的有效性，但使用旁路假体进行的研究表明，AR系统具有提高假体控制功效的潜力。
Functional upper-limb prosthetic training can improve users performance in controlling prostheses and has been incorporated into occupational therapy for individuals in need. In recent years, virtual reality (VR) and augmented reality (AR) technologies have been shown to be promising avenues to improve the convenience of rehabilitative prosthesis training systems. However, it is uncertain if the comprehensive efficacy and effectiveness of VR or AR assistive tools are adequate compared to conventional prosthetic tools and if not, whether enhancements can be made through incorporation of other technical paradigms. This work first presents a mixed reality system we developed for prosthesis control and training. Five able-bodied subjects are involved to perform three-dimensional object manipulation tasks in analogous AR and VR environments. Multiple evaluation metrics are applied to assess subjects performances within the two paradigms. Based on the comparative analysis, we find that VR-based environment promotes more efficient motion along with higher task completion rate and path efficiency while AR paradigm allows subjects to perform motor tasks with shorter time consumed. Another study is conducted to evaluate the efficiency and feasibility of AR-facilitated prosthesis control system compared to that in real-world and if any technical additions can be applied to improve the AR-based system. Three able-bodied subjects were engaged in the experiment to perform object manipulation tasks in a) physical environment, b) AR-without-bypass environment, and c) AR-with-bypass environment. Based on the results obtained from the assessment, we conclude that while our AR-based system modestly lags behind the effectiveness of physical systems, the study conducted using a bypass prosthesis suggests that AR system has the potential to improve the efficacy of prosthesis control.
