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Feature points re-localization method based on eigenvalue correction
Author(s): 
Pages: 2051-2056
Year: Issue:  6
Journal: Computer Engineering and Design

Keyword:  action unitsactive appearance modeleigenvaluerelocationisolated framesmooth;
Abstract: 为了解决特征点重定位算法的运行时间过长的问题,研究了人脸活动单元(action units,AU)的动态性,提出一种通过修正特征值来对特征点进行重定位的方法,从数学角度对特征值进行操作.该方法在主动表观模型(active appearancemodel,AAM)自动定位之后,根据整个序列中某一活动单元特征值的变化趋势来对序列进行去孤立帧、平滑等操作,进而通过计算间接地对特征点进行重新定位.实验结果表明,该方法避免了直接调整特征点的操作复杂性,在一定程度上达到提高特征点定位精确度的目的.
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