Robust mesh deformation with salient features preservation

Abstract

Triangular meshes often contain a few salient features. Traditional deformation algorithms mainly preserve the local details and volume, thus producing unnatural results. This paper proposes a robust and effective algorithm to prevent the distortion of salient features. Firstly, the salient features can be automatically extracted through saliency-based clustering and aggregation. A nonlinear energy function is then minimized to make the salient features behave rigidly to retain the shape. Finally, for the robustness of the minimization, we generate a coarse solid subspace around the input mesh, and carry out the energy minimization in this subspace. Experiments show that our algorithm can preserve the salient features and obtain visual-pleasing results.

摘要

创新点

本文提出了一种鲁棒有效的变形算法来防止显著特征的扭曲。 首先, 基于局部显著度的聚类算法可以自动地提取出网格模型的显著特征。 然后, 通过优化一个非线性能量函数来使得这些特征进行刚性变形, 从而保持它们的形状不变。 最后, 为了保证优化过程的收敛性和稳定性, 将能量函数投影到一个稀疏的实体子空间, 并在该子空间上进行能量的优化。