关键词: 局部特征, 几何结构, 目标识别

Abstract: Recently local feature based target recognition is becoming one of hot topics in computer vision.On the base of bag-of-word method only using appearance，this paper proposes a star model，which connects the location information of local key-point，composed of some parts depending on a landmark.It introduces the structure of image local region and reduces the complexity of full model.Experiments show that the proposed algorithm outperforms bag-of-word method in classification and realizes localization effectively.

Key words: local feature, structure, target recognition