论文标题
Levicursor：与悬浮物体的灵巧互动
LeviCursor: Dexterous Interaction with a Levitating Object
论文作者
论文摘要
我们提出了Levicursor，这是一种在3D中以高敏捷性移动物理，悬浮粒子的方法。悬浮物体可以沿任何方向连续，平稳地移动。我们独立地为每个可能的悬浮点优化了传感器相。使用预约，我们的系统可以在几微秒内确定最佳换能器相位，并达到15 ms的往返潜伏期。由于我们的插值方案，几乎可以以亚毫米精度即时控制悬浮的对象。我们提出了一种粒子稳定机制，该机制可确保悬浮粒子始终处于主悬浮陷阱中。最后，我们使用真正的3D光标进行了第一个FITTS的法律型指向研究，参与者控制了两个物理目标之间悬浮的光标的运动。用户研究的结果表明，使用Levicursor，用户可以达到与鼠标指针相当的性能。
We present LeviCursor, a method for interactively moving a physical, levitating particle in 3D with high agility. The levitating object can move continuously and smoothly in any direction. We optimize the transducer phases for each possible levitation point independently. Using precomputation, our system can determine the optimal transducer phases within a few microseconds and achieves round-trip latencies of 15 ms. Due to our interpolation scheme, the levitated object can be controlled almost instantaneously with sub-millimeter accuracy. We present a particle stabilization mechanism which ensures the levitating particle is always in the main levitation trap. Lastly, we conduct the first Fitts' law-type pointing study with a real 3D cursor, where participants control the movement of the levitated cursor between two physical targets. The results of the user study demonstrate that using LeviCursor, users reach performance comparable to that of a mouse pointer.
