采用PCA/ICA特征和SVM分类的人脸识别
Face Recognition Based on Features by PCA/ICA and Classification with SVM
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摘要: 人脸识别过程中,首先在主成分分析基础上进一步做独立成分分析,来提取更加有利于分类的面部特征的主要独立成分;然后采用一种分阶段淘汰的支持向量机分类机制进行识别.该方法扩展了支持向量机处理多类问题的能力,它基于1-1差别策略,根据各判别函数VC置信范围的差异进行排序,同时利用判别函数间的冗余来降低识别误差.对两组人脸图像库的测试结果表明,文中方法在识别率和识别时间等方面都取得了较好的效果.Abstract: This paper deals with combined approach of principle component analysis (PCA) and independent component analysis (ICA) to get the representation basis of face image set and proposes a new multi-step approach to extend support vector machine (SVM) capability to deal with multi-class face recognition by incorporating with the elimination strategy. Based on the one-against-one classifying strategy,it sorts the discrimination functions according to their own Vapnik-Chervonenkis confidence and uses the redundancy among them to decrease the discrimination error in case of rejecting decision. Experiments with two face-databases show that the proposed method has reached a higher recognition rate with reasonable time cost.
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