Based on the criteria of the shortest path of curves and directional deviation of paths, principalcurve detection is carried out in graph domain.
基于曲线最短路径和方向偏移判据，主曲线检测的所有运算都在图形表达中进行。
2
The main contributions of this thesis are summarized as follows: 1 Proposed a novel method using principalcurve to describe the shape feature of 3d models.
本文的主要贡献如下：1提出一个用主曲线描述三维模型形状特征的新方法。
3
On the basis of the nonparametric feature of traffic safety data, principalcurve was applied to analyzing the tremendous traffic safety data in this paper.