摘要： 针对带有骨架的3D模型的大范围形变问题，提出一种改进的梯度域方法，通过在容易引起体积失真的部位(如关节)加入虚拟节点构建体图，采用体微分坐标实现保持体积的形变。通过修改能量函数中的权值，实现表面材料相关的形变。实验表明，该方法能够满足虚拟膝关节手术的实时性和真实感要求。

关键词: 虚拟膝关节手术, 大范围形变, 梯度域方法, 有关节的形变, 表面材料相关

Abstract: According to the gradient domain method with two features, this paper propose an improved method for large deformation of 3D model with skeleton. It adds a virtual node near the model part that may introduce most of the volume degradation during deformation, such as joint part in the articulated deformation, and adjusts the weights in the energy function to make the deformation material-aware. Experiment shows the effectiveness and efficiency of the method in virtual knee joint surgery.

Key words: virtual knee joint surgery, large deformation, gradient domain method, articulated deformation, material-aware

中图分类号: 

• N945