面向服装CAD的多因素驱动人体模型变形技术研究  

Research on Multi-factor Driven Human Models Deformation Technology in Garment CAD

作　　者：耿玉磊[1] 陆国栋[1] 邓卫燕[1] 王进[1] 王媚[1] 

机构地区：[1]浙江大学CAD&CG国家重点实验室,杭州310027

出　　处：《中国图象图形学报》2009年第11期2349-2355,共7页Journal of Image and Graphics

基　　金：国家自然科学基金项目(60473129);教育部博士点基金项目(20060335118)

摘　　要：在以人体模型为基础的3维服装CAD系统中,为了获得设计师所需形体尺寸各异的人体模型,提出了一种多因素驱动人体模型变形的方法。该方法将人体模型的变形驱动因素分为尺寸因素、姿态因素和局部体形因素3类,并相应地提出了尺寸驱动、姿态驱动及局部体形驱动的人体模型变形算法。其中尺寸驱动采用基于截面环的算法和基于模板插值的算法,通过对人体特征尺寸进行改变来驱动人体变形;姿态驱动是通过关节变形算法来实现特定姿态的变形,并通过建立姿态库,以实现快速姿态匹配;局部体形驱动包括基于特征面尺寸和基于特征面形状的调整,以得到具有局部特征的人体。实例表明,该方法可对已有的人体进行快速变形,以获得用户所需的人体模型,从而满足了服装CAD中对人体模型的多样性需求。Virtual human deformation is one of the most important research focuses, and remains problematic in the research field of 3D garment CAD system. In this paper, we present multi-factor driven deformation methods to deform virtual human models. The driven factors are classified into three classes： size, posture and local figure. Three deformation methods are proposed to deal with the three factors. First, we use a feature size driven method to change the virtual human size, and this method can be divided into cross-section ring based method and templates interpo]ation based method. Then we implement a posture driven deformation to achieve a specific human body posture, and establish postures library for rapid gesture matching. Finally, we apply a local figure driven deformation which is achieved by changing the size or shape of the feature cross-sections to obtain the virtual human with local feature. Some given examples show that this method is very flexible to have diverse virtual human models for garment CAD.

关 键 词：服装CAD 人体模型变形 尺寸驱动 姿态驱动 局部体形驱动 

分 类 号：TP391.72[自动化与计算机技术—计算机应用技术]