基于细分曲面的泊松网格编辑

针对具有丰富几何细节的三维网格模型,基于直接坐标操纵的传统编辑算法在编辑过程中不可避免地存在细节特征无法得到有效保持的问题.综合基于细分曲面的空间变形方法以及微分域网格编辑二者优势,提出一种基于细分曲面的泊松网格编辑方法.首先建立待变形网格模型的包围网格,以包围网格所决定的细分曲面构造变形控制曲面;然后根据用户变形意图操纵包围网格,将对应细分曲面变化信息转化为对网格模型泊松梯度场的改变;最后根据变化后的梯度场重建网格模型.文中方法交互简单、直观,具有多分辨率编辑的优势,可以有效地保持网格模型的细节特征.丰富的变形实例证明了该方法的有效性和可行性.

Poisson Mesh Editing Based on Subdivision Surface

For 3D mesh models with abundant geometric details,traditional editing methods which manipulate vertex positions explicitly have an inevitable problem that geometric details can not be well-preserved during editing.In taking the joint advantages of subdivision-based space deformation and differential domain methods,a subdivision-based Poisson mesh editing approach is proposed.Firstly,a bounding mesh of the deformable model is constructed,and then the deformation control surface is obtained with the subdivis...