Modeling and animating eye blinks
Modeling and animating eye blinks
复制标题
眨眼建模和动画
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
J. Hodgins
中科院分区：
文献类型：
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作者：
Laura C. Trutoiu;E. Carter;Iain Matthews;J. Hodgins
面部动画通常无法传达人类面部动态中存在的细微差别。在本文中，我们研究了眨眼的空间和时间方面的微妙之处。传统的眨眼动画方法通常采用时间和空间对称的序列；然而，人类自然发生的眨眼在两个维度上都表现出明显的不对称性。我们通过使用主动外观模型跟踪高速视频的数据来对自然发生的眨眼进行分析。基于此分析，我们生成了一组与自然发生的眨眼密切匹配的关键帧参数。我们将基于真实数据制作的动画眨眼的感知自然度与使用教科书动画曲线创建的动画进行比较。对两个角色（一个逼真模型和一个卡通模型）进行眨眼动画，以确定角色风格的影响。我们发现，从眼睑完全闭合的人类数据模型生成的动画眨眼始终被认为比使用动画教科书中提出的各种类型的眨眼动态创建的动画更自然。
Facial animation often falls short in conveying the nuances present in the facial dynamics of humans. In this article, we investigate the subtleties of the spatial and temporal aspects of eye blinks. Conventional methods for eye blink animation generally employ temporally and spatially symmetric sequences; however, naturally occurring blinks in humans show a pronounced asymmetry on both dimensions. We present an analysis of naturally occurring blinks that was performed by tracking data from high-speed video using active appearance models. Based on this analysis, we generate a set of key-frame parameters that closely match naturally occurring blinks. We compare the perceived naturalness of blinks that are animated based on real data to those created using textbook animation curves. The eye blinks are animated on two characters, a photorealistic model and a cartoon model, to determine the influence of character style. We find that the animated blinks generated from the human data model with fully closing eyelids are consistently perceived as more natural than those created using the various types of blink dynamics proposed in animation textbooks.
影响因子：
4.4
作者：
C. Evinger;Karen A. Manning;P. Sibony
通讯作者：
C. Evinger;Karen A. Manning;P. Sibony