基于动态轮廓模型的微分域网格变形

Active contour model based gradient domain mesh deformation

提出了一种在线性空间中近似保持几何特征、骨架和体积特征的微分域网格变形技术,即基于动态轮廓模型的微分域网格变形.动态轮廓模型概括了网格的能量形式,通过保持它的不变性,从而达到骨架和体积的近似不变.由于动态轮廓模型是通过线性计算获得的,跟网格微分域方法融合后是一个线性的能量最小问题,从而达到用户操作的实时性.通过例子证明,基于动态轮廓模型的微分域网格变形技术能够很好地保持网格的几何特征、骨架和体积特征,且能做到实时交互.

A linear algorithm approximately preserving the geometric details, skeleton and volume characteristics on mesh deformation, i.e. active contour model based gradient domain mesh deformation, was introduced. The active contour model maintains key contours of the mesh, so that the skeleton and volume characteristics are to be approximately preserved by preserving the active contour model of the mesh. The active contour model is a linear constraint, so the main computation involved in the deformation is a solution of a linear energy minimization problem. A variety of examples demonstrated that the deformation operation based on the proposed algorithm is geometric details, skeleton and volume preserved and real-time interactive.