关键词: 模式识别, 表情识别, 特征点偏移角, 二维主成分分析, 支持向量机

Abstract:

In order to fully explore the difference in facial expression in videos,a novel facial expression recogni-tion approach for non- repeatable face,which utilizes both dynamic and static features to recognize the facial expres-sion in videos in low- complexity scenarios,is proposed.In this approach,the feature point offset angle of neutralexpression is presented as a feature to represent the difference information of measured facial expression,and simul-taneously,the two- dimension principal component features are extracted via two- dimension principal componentanalysis (2DPCA).Then,the combined dynamic- static information is sent to support vector machine (SVM) clas-sifiers to implement the facial expression recognition.Experimental results on JAFFE database indicate that,incomparison with the existing method which only uses the static features extracted via 2DPCA,the proposed methodmay result in 7% of increment in facial expression recognition accuracy.

Key words: pattern recognition, expression recognition, feature point offset angle, two- dimension principal compo-nent analysis, support vector machine