三角形网格多面体空间四边界区域的数据参数化

分析了三角网格多面体四边界区域数据参数化的基本方法,提出了在三角网格多面体四边界区域划分基础上进行四边界区域数据快速参数化的新技术。通过坐标变换、点面投影把空间四边区域的数据参数化难题转化为平面四边区域网格划分问题,并提出了由折线边构成平面四边区域的双向伸缩网格生成技术,解决了反求工程中复杂曲面分片四边区域的数据采集困难问题,为后继的多片四边区域的NURBS曲面的拼接和拟合提供了技术保证。

Parametrization of 3-D four-sided region on triangular mesh model

Basic methods of parametrization of the 3-D four-sided region on the triangular mesh were analyzed,and a new method of fast parametrization of the 3-D four-sided region data was proposed based on the segmentation of the 3-D four-sided region on the triangular mesh model.By the coordinate transform and the projection of the points into a plane,the difficult parametrization in a 3-D four-sided region is changed into a grid generation problem in a planar four-sided region.A bidirectional flexible grid generati...