The Effects of Motion Artifacts on Self-Avatar Agency
The Effects of Motion Artifacts on Self-Avatar Agency
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DOI：
10.3390/informatics6020018
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发表时间：
2019-06-01
影响因子：
3.1
通讯作者：
Anagnostopoulos, Christos-Nikolaos
中科院分区：
文献类型：
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作者：
Koilias, Alexandros;Mousas, Christos;Anagnostopoulos, Christos-Nikolaos
在虚拟环境中实现自我代理的一种方式是通过使用动作捕捉系统并将用户的动作重定向到虚拟化身。在这项研究中，我们调查了是否自我代理的影响时，运动伪影出现在顶部的基线动作捕捉数据分配给自我化身。在这个实验中，我们实现了四个伪影：噪声、延迟、运动跳跃和关节的偏移旋转。从动作捕捉系统直接提供的数据形成了研究的基线。我们开发了三个观察任务来评估自我代理：自我观察、通过虚拟镜子观察以及运动过程中的观察。通过了一份调查问卷，用于了解参与者的自我能动性。我们分析了收集到的参与者的反应，以确定运动伪影是否显着改变了参与者的自我代理感。所获得的结果表明，参与者并不总是敏感的运动工件分配给自我化身，但自我代理的感觉是依赖于他们被要求执行的观察任务。进一步研究的意义进行了讨论。
One way of achieving self-agency in virtual environments is by using a motion capture system and retargeting user's motion to the virtual avatar. In this study, we investigated whether the self-agency is affected when motion artifacts appear on top of the baseline motion capture data assigned to the self-avatar. For this experiment, we implemented four artifacts: noise, latency, motion jump, and offset rotation of joints. The data provided directly from the motion capture system formed the baseline of the study. We developed three observation tasks to assess self-agency: self-observation, observation through a virtual mirror, and observation during locomotion. A questionnaire was adopted and used to capture the self-agency of participants. We analyzed the collected responses of participants to determine whether the motion artifacts significantly altered the participants' sense of self-agency. The obtained results indicated that participants are not always sensitive to the motion artifacts assigned to the self-avatar, but the sense of self-agency is dependent on the observation task they were asked to perform. Implications for further research are discussed.