优化局部保留投影及其在表情识别中的应用  

Optimized Locality Preserving Projections and Its Application in Expression Recognition

作　　者：黄勇[1] 

机构地区：[1]柳州铁道职业技术学院电子工程系,广西柳州545007

出　　处：《计算机工程》2011年第4期210-211,220,共3页Computer Engineering

摘　　要：提出一种基于优化局部保留投影(OLPP)的人脸表情识别方法。OLPP方法在降维过程中将图像结构信息融入LPP目标函数,通过降维处理,在获得图像结构信息的同时将投影最优化,从而能从原始表情数据中提取更多更具判决性的有效表情信息。JAFFE和CED-WYU(1.0)2个表情数据库的识别结果表明,基于OLPP的特征提取方法能有效提高识别率。A facial expression recognition method based on Optimized Locality Preserving Projections（OLPP） is proposed. Unlike Locality Preserving Projections（LPP）, OLPP incorporates graph construction into the LPP objective function in dimension reduction process, thus obtains a simultaneous learning framework for graph construction and projection optimization. OLPP can extract more useful and discriminating expression features from the original expression data. Experimental result on JAFFE and CED-WYU（1.0） shows that OLPP is an effective method for improving the recognition accuracy.

关 键 词：局部保留投影 优化局部保留投影 表情识别 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]