Research on supporting life-sized remote-video cooperative work where users can freely move around without distinguishing local from remote

在真人大小的远程视频协作工作的环境中，不区分本地和远程，我们已经验证了对称性的重要性，本地和远程用户可以参考彼此的活动，通过运行三个实验。在第一个实验中，我们给出了以会话沟通为中心的任务，其中本地和远程被试的座位位置是固定的，并且没有物理对象可以共享。由于在生活大小的图像显示在LCD面板上，身体和脸的用户是面向LCD面板，我们观察到，用户有积极的互动。在第二个实验中，我们进行了一个实验，在这个实验中，远程用户可以在中心桌子周围自由移动，并共享中心桌子上的工作空间。在那里，我们研究了是否显示上半身的远程合作者是有价值的小组工作，需要在他们的工作过程中的身体运动。一项有和没有上身意象的比较研究表明，小组工作更有效， ...更多信息 当显示上半身图像时，效率很高。我们推断，上半身图像帮助他们预测和支持远程合作者的后续运动，由于提高了相似性。在第三个实验中，为了缓解远程手势经常被遮挡、横切和从人们的注意力中溜走的不可见性问题，我们提出了一种旨在缓解不可见性问题的技术“远程滞后”。该技术为人们提供了远程手势的即时回放，以从不可见或错过的协调上下文中恢复。为了研究所提出的技术的对称性的影响，我们研究了四人组从事两个指导任务，使用物理对象和没有远程滞后。我们的研究结果表明，远程滞后是有效的，在减轻不可见性问题，从而减少问题/确认和冗余的指令在协作过程中。虽然这项技术似乎增加了助手的体力，但它降低了助手在执行任务时的整体努力，并降低了两个合作者的时间需求。少

In the environment for life-sized remote-video cooperative work without distinguishing local from remote, we have verified the importance of symmetry that local and remote users can refer to each other's activity by running three experiments. In the first experiment, we gave the conversation communication-centered task in which the seat positions of local and remote subjects are fixed and there are no physical objects to be shared. Since the images at life size are displayed on LCD panels, the bodies and faces of users are oriented to the LCD panels and we observed that users had active interaction. In the second experiment, We conducted an experiment in which distant users free move around a center table and share a work space on the center table. There, we examined whether showing the upper body of distant collaborators is valuable for group work that requires body movement during their work. A comparative study with and without upper body images indicated that group work were more e … More fficient when upper body images were shown. We infer that upper body images helped them predict and brace for distant collaborator's subsequent movement due to improved similarity. In the third experiment, To alleviate the problem of invisibility that remote gestures often get occluded, transected, and slipped out of one's attention, we proposed a technique, "remote lag," that aims to mitigate the invisibility problems. The technique provides people with an instant playback of the remote gestures to recover from the invisible or missed context of coordination. To examine the effects of the proposed technique to the symmetry property, we studied four-person groups engaging in two mentoring tasks using physical objects with and without remote lags. Our results show that remote lags are effective in alleviating the invisibility problems, resulting in fewer questions/confirmations and redundant instructions during collaboration. Although the technique seems to increase a helper's physical effort, it decreases the helper's overall effort in performing the tasks and alleviates both collaborators' temporal demands. Less