Research Article
Human Activities for Classification via Feature Points
School of Computer Science and Technology, Xidian University, P.O. Box 171, No. 2 South Taibai Road, Xi�an, (710071) China
Zhijing Liu
School of Computer Science and Technology, Xidian University, P.O. Box 171, No. 2 South Taibai Road, Xi�an, (710071) China
Haiyong Zhao
School of Computer Science and Technology, Xidian University, P.O. Box 171, No. 2 South Taibai Road, Xi�an, (710071) China