The effect of network delay on remote calligraphic teaching with haptic interfaces
The effect of network delay on remote calligraphic teaching with haptic interfaces
复制标题
网络延迟对触觉界面远程书法教学的影响
DOI：
10.1145/1230040.1230077
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
K. Sezaki
中科院分区：
文献类型：
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作者：
K. Hikichi;Y. Yasuda;A. Fukuda;K. Sezaki
对于分布式虚拟环境（DVE）系统的设计而言，明确网络层面的服务质量（QoS）和用户层面的QoS之间的关系是很重要的。本文研究了一个带有触觉接口的远程书法教学系统中的网络QoS问题，在该系统中，一对用户（教师和学生）直接交互（不通过任何虚拟对象），一个用户的触觉设备的操作会立即反映在另一个用户的反作用力上。在这个系统中，教师利用约束力引导学生在虚拟纸张上写下相同的字符。该约束力用于使触觉设备的用户触笔跟随远程用户的操作。我们提出了一种生成约束力的新方法，它能够在抑制意外振动的同时紧紧握住远程用户的触笔。这个系统还可以显示一个视觉引导，它呈现远程用户的信息（光标位置和书写压力）。
我们对该系统进行了主观评估，以评估教师和学生主机之间网络延迟的影响。我们还比较了系统中力反馈和视觉引导的效果，以评估触觉的作用。
For a design of distributed virtual environments (DVEs) system, it is important to clarify the relation between network-level quality of service (QoS) and user-level QoS. This paper examines network QoS problem on a remote calligraphic teaching system with haptics interfaces, where a pair of users (teacher and student) interact directly (not through any virtual objects), and the operation of haptic device of one user is immediately reflected to another user's reaction force. In this system, teacher navigates student to write down the same character on a virtual paper using a constraint force. The constraint force is used to hold the user's stylus of haptic device to follow the remote user's operation. We propose a new method to generate a constraint force, which enables to hold tightly the remote user's stylus with suppressing unexpected vibrations. This system also can show a visual guide, which stands the remote user's information (position of the cursor and writing pressure).
We carried out subjective evaluation on the system for assessing the effect of network delay between teacher and student's hosts. We also compared the effect of force feedback and visual guide in the system to evaluate the role of haptics.