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Diabetic Neuropathy01:22

Diabetic Neuropathy

DefinitionDiabetic neuropathy is nerve damage caused by long-standing diabetes mellitus. It results directly from prolonged high blood sugar levels.PathophysiologyThe pathophysiology of diabetic neuropathy involves both metabolic and vascular disturbances triggered by chronic hyperglycemia.Metabolic injury: Elevated glucose levels activate the polyol pathway within nerve cells, leading to the accumulation of sorbitol and fructose. This increases oxidative stress, disrupts normal nerve...

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APF-S2T:指导到目标重定向 基于人工潜力场的步行

Jun-Jie Chen, Huan-Chang Hung, Yu-Ru Sun

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    概括

    一个新的重定向步行 (RDW) 控制器,APF方向向目标 (APF-S2T),可以减少虚拟环境中的重置. 这种人工潜力场 (APF) 方法通过尽量减少用户中断,优于现有的RDW控制器.

    科学领域:

    • 虚拟现实 虚拟现实 虚拟现实
    • 人与计算机的交互
    • 机器人技术 机器人技术 机器人技术

    背景情况:

    • 重定向步行 (RDW) 允许在比物理空间更大的虚拟环境中进行自然运动.
    • 现有的人工潜力场 (APF) 和基于对齐的控制器,如APF-S2G和APF-RDW,面临着挑战,特别是在走廊等封闭区域的频繁重置.
    • 这些局限性来自于控制器局部化到用户位置,导致矢量指向墙壁.

    研究的目的:

    • 介绍APF指导到目标 (APF-S2T),一个新的RDW控制器,旨在减轻重置.
    • 通过模拟评估APF-S2T的性能与最先进的RDW控制器相比.
    • 提高用户沉浸感,减少在大型虚拟环境中的中断.

    主要方法:

    • 开发了APF-S2T,它识别了用户可行区域内得分最低的目标样本点.
    • 评分是APF值和用户距离的组合.
    • 到达这个目标点的方向决定了RDW的增长,优化了转向.
    • 进行了基于模拟的评估,将APF-S2T与APF-S2G,APF-RDW,基于可见度多边形的对齐和对齐优化的控制器进行比较.

    主要成果:

    • 与所有其他评估的控制器相比,APF-S2T显著减少了重置的次数.

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  • 使用APF-S2T,重置之间的平均距离也大幅增加.
  • 模拟结果显示,APF-S2T在最小化用户中断方面表现出卓越的性能.

    • 结论:

    • APF-S2T代表了重定向步行控制器技术的重大进步.
    • 提出的方法有效地克服了以前的APF和基于对齐的控制器的局限性,特别是在受限制的虚拟空间.
    • 通过尽量减少破坏性重置,APF-S2T提供了更无和沉浸式的虚拟现实体验.