Facial Expression Representation Based on Timing Structures in Faces
Facial Expression Representation Based on Timing Structures in Faces
复制标题
基于面部时序结构的面部表情表示
DOI：
10.1007/11564386_12
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
T. Matsuyama
中科院分区：
文献类型：
--
作者：
M. Nishiyama;H. Kawashima;Takatsugu Hirayama;T. Matsuyama
本文提出了一种基于面部图像序列中部分运动的时间结构来解释面部表情的方法。为了提取结构，我们提出了一种新颖的面部表情表示，我们称之为面部乐谱，类似于乐谱。面部评分使我们能够将面部表情描述为时间间隔的时空组合；每个间隔代表一个简单的运动模式以及运动的开始和结束时间。因此，我们可以根据分数区间之间时间差异的多元分布对细粒度表达式进行分类。在本文中，我们提供了一种使用自下而上的动态聚类从输入图像自动获取分数的方法。我们通过比较有意微笑和自发微笑的时间结构来评估面部评分的效率。
This paper presents a method for interpreting facial expressions based on temporal structures among partial movements in facial image sequences. To extract the structures, we propose a novel facial expression representation, which we call afacial score, similar to a musical score. The facial score enables us to describe facial expressions as spatio-temporal combinations of temporal intervals; each interval represents a simple motion pattern with the beginning and ending times of the motion. Thus, we can classify fine-grained expressions from multivariate distributions of temporal differences between the intervals in the score. In this paper, we provide a method to obtain the score automatically from input images using bottom-up clustering of dynamics. We evaluate the efficiency of facial scores by comparing the temporal structure of intentional smiles with that of spontaneous smiles.