High-Fidelity Avatar Eye-Representation
High-Fidelity Avatar Eye-Representation
复制标题
高保真头像眼睛表现
DOI：
10.1109/vr.2008.4480759
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
A. Steed
中科院分区：
文献类型：
--
作者：
W. Steptoe;A. Steed
在协作虚拟环境中，化身的视觉表现已被证明是参与者行为和反应的重要决定因素。我们通过测量人们识别化身观察点（注视方向）的准确程度，以及对化身行为和视觉表现的主观真实性评估，探索了不同条件的眼睛表征对高保真化身的影响。研究的两个变量中的第一个是眼窝变形，也就是说，我们的化身的眼睑、眉毛和周围区域根据眼睛的旋转而真实地变形。第二个是我们的化身的眼睛的聚散度到准确的注视点。我们的结果表明，这两个变量显着影响关注点识别的准确性。这种准确性很大程度上取决于视角和观察点本身的组合。我们发现，眼窝变形尤其对我们的化身整体外观的感知真实性以及仅判断眼睛时产生非常积极的影响。然而，尽管主观评价良好，但最高质量的头像在注视点识别任务中的整体表现实际上更差。这提供了更多证据表明，随着我们继续使用更高保真度的化身，在支持表示的真实性和支持实际的交流任务之间将需要进行权衡。
In collaborative virtual environments, the visual representation of avatars has been shown to be an important determinant of participant behaviour and response. We explored the influence of varying conditions of eye-representation in our high-fidelity avatar by measuring how accurately people can identify the avatar's point-of- regard (direction of gaze), together with subjective authenticity assessments of the avatar's behaviour and visual representation. The first of two variables investigated was socket-deformation, which is to say that our avatar's eyelids, eyebrows and surrounding areas morphed realistically depending on eye-rotation. The second was vergence of our avatar's eyes to the exact point-of-regard. Our results suggest that the two variables significantly influence the accuracy of point-of-regard identification. This accuracy is highly dependent on the combination of viewing-angle and the point-of-regard itself. We found that socket-deformation in particular has a highly positive impact on the perceived authenticity of our avatar's overall appearance, and when judging just the eyes. However, despite favourable subjective ratings, overall performance during the point-of-regard identification task was actually worse with the highest quality avatar. This provides more evidence that as we move forward to using higher fidelity avatars, there will be a tradeoff between supporting realism of representation and supporting the actual communicative task.