Application of Improved Active Shape Model in Face Positioning
Xinpu Guan · Jisuanji gongcheng · 2007
This paper presents an improvement on the conventional active shape model(ASM)for face alignment.In this method,DCT coefficients of rectangular domain centering the lineament points are used in lineament matching,and a 2-D texture pattern search-and-fitting scheme instead of an 1-D analysis is used to improve the precision of the ASM method.DCT has good capability in abandoning correlation of data and concentrating energy of images.It withholds 95% energy of all by extracting only 3.52% DCT coefficients and also enhances the orientation speed.Experiment results demonstrate the efficacy of the method in locating facial features.