一种基于特征区域划分的网格简化方法  

Mesh simplification based on features region partition

作　　者：刘伟明[1] 王安兵[1] 申卫昌[1] 鱼滨[1] 

机构地区：[1]西北大学信息科学与技术学院,陕西西安710127

出　　处：《西北大学学报（自然科学版）》2010年第2期229-233,共5页Journal of Northwest University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(60871097)

摘　　要：目的研究对三维网格模型简化的一种方法。方法根据人脸面部特征点将人脸划分为关键特征区和非关键特征区,在不同的区域设定不同的离散曲率简化阈值,采用边折叠的方式来减少网格密度。结果该方法能有效地减少网格的数据量,同时保持人脸的特征细节。结论对三维网格模型使用基于特征区域划分的网格简化方法,降低了模型的复杂度。Aim To study a mesh simplification methed for the three-dimeusional mesh model.Methods According to distribution of feature points,the face was divided into several parts,and named critical feature regional or non-critical feature regional.It adjusted different areas through giving different curvature values,this algorithm used edge collapse method to reduce the density of meshes.Results As the curvature was useful to enhance the shape description,the details of facial feature were kept while other areas were simplified in a large extent when this method was applied.Conclusion Mesh simplification method is based on features region partion for the three-dimensional mesh model.The cemplexity of these models were reduced.

关 键 词：网格简化 人脸面部特征 特征区域划分 离散曲率 边折叠 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]