Expression Recognition Based on Contourlet Transform and Locality Preserving Projection
Zhu Peng · Jisuanji gongcheng · 2012
This paper presents an expression recognition method based on Contourlet transform and Locality Preserving Projection(LPP).It divides the face expressions image into three parts: left eye(including their eyebrows),right eye(including their eyebrows) and mouth.By using local Contourlet transform to process the local expression image and original image,it gets the low-frequency components and high-frequency components of the image.Combining with the low-frequency components of local expression image and high-frequency components of the original image,it extracts feature by using LPP algorithm,after that it uses Support Vector Machine(SVM) as the classifier.Experimental results indicate that the method has high recognition rate.