基于快速成型技术生成等高线的方法研究

提出利用快速成型技术构建等高线的算法.首先利用快速成型技术对点云进行分层,通过对等高线上下两层点云加权计算等高线特征点;然后将特征点转化为格网图像,并利用行列格网直线段对格网图像进行快速轮廓提取及边界跟踪;最后采用B样条曲线拟合生成等高线.试验表明,该方法生成的等高线,不仅具有良好的质量,而且减少了构建三角网的中间过程,提高了计算效率.

Research on Contours Made by Rapid Prototyping Technology

This paper presents a new contour generation method based on rapid prototyping technology. It stratifies point clouds by adopting rapid prototyping technology. The feature points are derived by calculating the weighted coordinates of points of the upper and lower layers. The feature points are projected onto a plane and converted to a grid image. The image outline is extracted and the edge tracking is performed by the line segment of the grid. Finally, B spline fitting is used to generate the contours. The experiment shows that the proposed method not only generates contour lines with good quality but also improve the efficiency of operations by reducing the process of building a triangular network.