Telepresence in Videocommunications
Telepresence in Videocommunications
复制标题
视频通信中的远程呈现
DOI：
10.1177/154193129403800302
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
Martin Böcker
中科院分区：
文献类型：
--
作者：
A. Prussog;L. Mühlbach;Martin Böcker
本文讨论了影响视频通信中远程呈现印象的因素。对话者所体验到的远程呈现程度是来自远程站点的自然视觉线索被媒体充分传输的程度。该论文报告了两项实验性人为因素研究，调查了视频会议系统各种功能的影响，尤其是与会者对远程呈现的印象以及用户满意度和使用这些系统的意愿。在实验 1 的框架内，不同的系统功能包括代表与会者的比例（自然尺寸与缩小尺寸）以及与会者周围环境的表示（远程房间的小区域与大区域）。在实验 2 中，所测试的系统功能是与会者的立体表示。结果表明，与会者的自然尺寸表示和立体表示都增加了远程呈现的印象。无法验证代表与会者周围环境的预期好处。给定固定的屏幕尺寸，与会者的尺寸和周围环境的表示之间的权衡有利于自然尺寸表示。
The paper discusses factors that affect the impression of telepresence in video-communications. Telepresence is experienced by interlocutors to the extent to which natural visual cues from the remote site are adequately transferred by the medium. The paper reports on two experimental Human Factors studies investigating the effects of various features of videoconferencing systems in terms of, inter alia, the conferees' impression of telepresence as well as user satisfaction and the willingness to use those systems. Within the framework of Experiment 1 the system features that were varied were the scale of representing the conferees (natural vs. reduced size) and the representation of the conferees' surroundings (small vs. large sector of the remote room). In Experiment 2 the system feature being tested was the stereoscopic representation of the conferees. Results showed that both the natural-size representation of conferees as well as the stereoscopic representation increase the impression of telepresence. The expected benefits of a representation of the conferees' surroundings could not be verified. Given a fixed size of the screen, the trade-off between the conferees' size and the representation of surroundings is in favor of the natural size representation.