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首页> 外文期刊>Visualization and Computer Graphics, IEEE Transactions on >Adaptive Space Warping to Enhance Passive Haptics in an Arthroscopy Surgical Simulator
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Adaptive Space Warping to Enhance Passive Haptics in an Arthroscopy Surgical Simulator

机译：自适应空间扭曲可增强关节镜手术模拟器中的被动触觉

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摘要

Passive haptics, also known as tactile augmentation, denotes the use of a physical counterpart to a virtual environment to provide tactile feedback. Employing passive haptics can result in more realistic touch sensations than those from active force feedback, especially for rigid contacts. However, changes in the virtual environment would necessitate modifications of the physical counterparts. In recent work space warping has been proposed as one solution to overcome this limitation. In this technique virtual space is distorted such that a variety of virtual models can be mapped onto one single physical object. In this paper, we propose as an extension adaptive space warping; we show how this technique can be employed in a mixed-reality surgical training simulator in order to map different virtual patients onto one physical anatomical model. We developed methods to warp different organ geometries onto one physical mock-up, to handle different mechanical behaviors of the virtual patients, and to allow interactive modifications of the virtual structures, while the physical counterparts remain unchanged. Various practical examples underline the wide applicability of our approach. To the best of our knowledge this is the first practical usage of such a technique in the specific context of interactive medical training.
机译：被动触觉，也称为触觉增强，表示使用虚拟环境的物理对应物来提供触觉反馈。与主动力反馈相比，使用被动触觉可产生更逼真的触摸感，尤其是对于刚性接触。但是，虚拟环境的更改将需要修改物理副本。在最近的工作中，已经提出了将空间翘曲作为克服该限制的一种解决方案。在这种技术中，虚拟空间会失真，从而可以将多种虚拟模型映射到一个物理对象上。在本文中，我们提出了自适应空间扭曲作为扩展。我们展示了如何将此技术用于混合现实外科手术训练模拟器中，以便将不同的虚拟患者映射到一个物理解剖模型上。我们开发了将不同器官的几何形状扭曲到一个物理模型上的方法，以处理虚拟患者的不同机械行为，并允许对虚拟结构进行交互式修改，而物理对应对象保持不变。各种实际例子强调了我们方法的广泛适用性。据我们所知，这是这种技术在交互式医学培训的特定背景下的首次实际应用。

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