基于局部刚性约束的微分网格变形算法  

Differential mesh deformation algorithm based on local rigidity constraint

作　　者：许斌 于勇 谭营[3] 

机构地区：[1]96829部队 [2]辽宁省烟草公司辽阳市公司信息中心 [3]96623部队

出　　处：《计算机应用研究》2015年第5期1580-1585,共6页Application Research of Computers

基　　金：国家科技支撑计划资助项目(2009BAI81B00)

摘　　要：针对网格角色模型(人体或动物模型)的关节部位在变形中易出现扭曲或不自然体积改变的问题,结合网格刚性变形和微分变形的理论,提出了一种基于局部刚性约束的变形算法。在本算法中,首先采用距离场方法求取模型的骨架关节点,然后在关节点上插入刚性约束架,再用均值坐标将刚性约束架和模型绑定到一起,最后通过求解包含微分约束和局部刚性约束的能量方程得到变形结果。实验表明,本算法很好地解决了大规模角色模型变形过程中,关节部位出现失真的问题。To the question that joint area of mesh role model always appear distortion and wrong volume variety in process of deformation,this paper proposed an algorithm based on local rigidity constraint. This algorithm acquired joint of mesh model skelecton at first,then inserted rigidity constraint at joints and bound them to mesh surface with mean value coordinate. At last it got the deformation result from solution of energy equation which contained Laplacian constraint and local rigidity constraint.Experiments show that the algorithm introduced in this thesis can solve the joint area distortion problem in mesh role model deformation very well.

关 键 词：网格变形 模型骨骼 刚性约束 关节点 Laplacian坐标 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]