Ultrasound transducer arrays are capable of producing tactile sensations on the hand, promising hands-free haptic interaction for virtual environments. However, controlling such an array with respect to reproducing a desired perceived interaction remains a challenging problem. In this article, we approach this problem as a dynamic mapping of virtual interactions to existing control metaphors of ultrasound devices, namely, the modulation of focal point positions and intensities over time, a method known as Spatiotemporal Modulation (STM). In particular, we propose an optimization approach that takes into account known perceptual parameters and limitations of the STM method. This results in a set of focal point paths optimized to best reconstruct an arbitrary target pressure field.

中文翻译：

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STM 超声渲染的路径路由优化

超声换能器阵列能够在手上产生触觉，有望在虚拟环境中实现免提触觉交互。然而，关于再现期望的感知交互来控制这样的阵列仍然是一个具有挑战性的问题。在本文中，我们将这个问题作为虚拟交互到超声设备现有控制隐喻的动态映射来处理，即焦点位置和强度随时间的调制，这种方法称为时空调制 (STM)。特别是，我们提出了一种优化方法，该方法考虑了 STM 方法的已知感知参数和局限性。这导致了一组优化的焦点路径，以最好地重建任意目标压力场。