CAJ | 학술논문

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.
재이인체모형위기출적3유복장CAD계통중,위료획득설계사소수형체척촌각이적인체모형,제출료일충다인소구동인체모형변형적방법.해방법장인체모형적변형구동인소분위척촌인소、자태인소화국부체형인소3류,병상응지제출료척촌구동、자태구동급국부체형구동적인체모형변형산법.기중척촌구동채용기우절면배적 산법화기우모판삽치적산법,통과대인체특정척촌진행개변래구동인체변형;자태구동시통과관절변형산법래실현특정자태적변형,병통과건립자태고,이실현쾌속자태필배;국부체형구동포괄기우특정면척촌화기우특정면형상적조정,이득도구유국부특정적인체.실례표명,해방법가대이유적인체진행쾌속변형,이획득용호소수적인체모형,종이만족료복장CAD중대인체모형적다양성수구.
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 interpolation 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.