三角网格模型特征线识别

Feature Line Detection of Triangular Meshes

给出了新的三角网格模型顶点法矢计算公式,据此对模型中的边进行了分类;在此基础上,提出了一种曲面三角网格模型特征线识别的新方法,该方法根据网格中边的分类结果形成含特征边的特征域,再由这些特征域得到初始特征线,最后对初始特征线进行优化处理,从而识别出网格模型的特征线。

A new formula for calculation of normal vertex vector of triangular meshes was put forward. Based on this formula, edges of meshes are classified. On the basis of the edge classification, a novel method for detection of feature lines of triangular meshes was proposed. Firstly, according to the results of edge classification, this method constructs feature regions including feature edges. Then, initial feature lines in these feature regions are detected. Finally, optimal processes are implemented to these initial feature lines, and feature lines of triangular meshes are detected.