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《Journal of Zhejiang University(Engineering Science)》 2012-01
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Facial expression recognition based on Adaboost-Gaussian process classification

LI Wen-shu1,HE Fang-fang1,QIAN Yun-tao2,ZHOU Chang-le3(1.College of Information Science and Technology,Zhejiang Sci-Tech University,Hangzhou 310018,China; 2.College of Computer Science and Technology,Zhejiang University,Hangzhou 310027,China;3.Institute of Artificial Intelligence,Xiamen University,Xiamen 361005,China)  
By using the Gaussian process classifier's advantages of high classification accuracy and low computational complexity,an improved expression recognition method was proposed in order to modify the Adaboost's disadvantage of poor classification accuracy and long time consuming.The facial expression recognition algorithm combines Gaussian process classification(GPC) with Adaboost.The algorithm uses the Gaussian process classifier as weak classifier when training Adaboost.Then these weak classifiers are combined into an overall classification,and the Adaboost is extended into a multi-class classification algorithm.Gabor wavelet transformation is used to extract facial expressional features,since the high-dimensional Gabor features are redundant;the two-dimensional principal component analysis(2DPCA) is used to select these features.Experimental results based on the Cohn-Kanade database and JAFFE database show that the accuracy and recognition speed of the algorithm are inspiring.
【Fund】: 国家自然科学基金资助项目(60702069 60672018);; 浙江省自然科学基金资助项目(Y1080851)
【CateGory Index】: TP391.41
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