基于规范化KDDA的人脸识别算法  

Face recognition algorithm based on regularized kernel direct discriminant analysis

作　　者：杨家红[1] 史超[1] 王耀南[2] 

机构地区：[1]湖南师范大学工学院,长沙410081 [2]湖南大学电气与信息工程学院,长沙410082

出　　处：《计算机工程与应用》2007年第5期36-38,共3页Computer Engineering and Applications

基　　金：湖南省省教育厅资助科研课题(the Research Project of Department of Education of Hunan Province; China under Grant No.02C226)

摘　　要：传统的PCA和LDA算法受限于“小样本问题”,且对像素的高阶相关性不敏感。论文将核函数方法与规范化LDA相结合,将原图像空间通过非线性映射变换到高维特征空间,并借助于“核技巧”在新的空间中应用鉴别分析方法。通过对ORL人脸库的大量实验表明,该方法在特征提取方面优于PCA,KPCA,LDA等其他方法,在简化分类器的同时,也可以获得高识别率。Traditional methods,such as PCA （Principle Component Analysis） and LDA （Linear Discriminant Analysis）,not only suffer from the so-called ＂Small Sample Size＂（SSS） problem,but also are insensitive to the high order relations of image pixels. In this paper,kernel machine based regularized discriminant analysis method is proposed,which projects the image space to the high dimensional feature subspace through some non-linear transformation,and then performs discriminant analysis using the ＂kernel-skills＂ on the new feature subspace.Extensive experiments on ORL database indicate the method proposed outperforms PCA, KPCA,LDA methods on feature extraction.It can also simplify the classifier design,meanwhile,accomplish high recognition rate.

关 键 词：核函数方法 规范化KDDA KPCA 小样本问题 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]