Physics-based character skinning using multidomain subspace deformations.
Physics-based character skinning using multidomain subspace deformations.
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使用多域子空间变形的基于物理的角色蒙皮。
DOI：
10.1109/tvcg.2012.78
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发表时间：
2012
影响因子：
5.2
通讯作者：
James,DougL
中科院分区：
文献类型：
--
作者：
Kim,Theodore;James,DougL
我们提出了一个域分解的方法来模拟关节变形字符完全在一个子空间框架。该方法支持准静态和动态变形，非线性运动学和材料，并可以实现交互式的时间步进率。为了避免人工刚性，或“锁定”，与耦合低秩域模型与硬约束，我们采用惩罚为基础的耦合力。多域子空间积分器可以有效地模拟变形，并利用一种新的快速三明治变换（FST）的旋转域之间的约束力的有效的子空间的评价。实例中提出的关节字符与准静态和动态变形，并与数百个完全耦合模式的互动性能。使用我们的方法，我们已经观察到三到四个数量级之间的加速比满秩，未简化的模拟。
We propose a domain-decomposition method to simulate articulated deformable characters entirely within a subspace framework. The method supports quasistatic and dynamic deformations, nonlinear kinematics and materials, and can achieve interactive time-stepping rates. To avoid artificial rigidity, or "locking," associated with coupling low-rank domain models together with hard constraints, we employ penalty-based coupling forces. The multi-domain subspace integrator can simulate deformations efficiently, and exploits efficient subspace-only evaluation of constraint forces between rotated domains using a novelFast Sandwich Transform(FST). Examples are presented for articulated characters with quasistatic and dynamic deformations, and interactive performance with hundreds of fully coupled modes. Using our method, we have observed speedups of between three and four orders of magnitude over full-rank, unreduced simulations.