基于区域曲率特性的网格模型简化算法

对目前网格模型简化中的特征保护问题,提出了一种基于区域曲率特性的网格模型简化算法。利用混合过渡特征提取算法提取模型特征并进行区域分割,获得模型的特征区域与非特征区域,然后根据区域曲率值大小及面片数量进行简化量调整分配。研究了基于面积权值的QEM简化算法,并对各个区域进行独立简化,以实现不同网格区域简化过程的优化。通过实例验证比较,所提出的基于区域曲率特性的简化算法比整体简化算法和线性比例分配简化算法具有更优的简化效果和精度。

Research on Mesh Simplifing Algorithm Based on Region Curvature Feature

Aiming at the protection of features in model simplification, it proposes a mesh simplification algorithm based on region segmentation. This method extracts the feature through mixed feature extraction algorithm, segments the model into feature regions and non - feature regions, simplifies the process in each region independently. It distributes the simplified proportion according to meshes quantity size and region curvature properties. The examples show that the method can protect the feature region more effectively than others, and obtain better simplified effect and precision.