面部表情的真深度测量:对相机和面部之间角度的敏感性

L. Esselink, M. Oomen, F. Roelofsen
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引用次数: 0

摘要

面部表情在交流中起着重要作用,尤其是在手语中。对面部表情的精确贡献进行语言分析,以及创建逼真的会话虚拟形象,特别是手语虚拟形象,需要精确测量人类在语言互动时的面部表情。最近的几个项目使用了TrueDepth相机来进行这样的测量。本文研究了这种技术的可靠性。特别地,我们考虑了相机和脸部之间的角度对测量结果的影响程度。总的来说,我们发现在不同角度的测量之间通常存在显著的,而且往往是相当实质性的差异。然而,当被测量的面部特征高度激活时,不同角度的测量结果通常具有很强的相关性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Truedepth Measurements of Facial Expressions: Sensitivity to the Angle Between Camera and Face
Facial expressions play an important role in communication, especially in sign languages. Linguistic analysis of the exact contribution of facial expressions, as well as the creation of realistic conversational avatars, especially sign language avatars, requires accurate measurements of the facial expressions of humans while engaged in linguistic interaction. Several recent projects have employed a TrueDepth camera to make such measurements. The present paper investigates how reliable this technique is. In particular, we consider the extent to which the obtained measurements are affected by the angle between the camera and the face. Overall, we find that there are generally significant, and often rather substantial differences between measurements from different angles. However, when the measured facial features are highly activated, measurements from different angles are generally strongly correlated.
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