基于三边域曲面的数字地面模型重建方法

The Model for Reconstructing Digital Ground with 3-side Region Surfaces

结合基于四边域的曲面样条方法以及简单三角网格方法的特点 ,提出采用三边域B B曲面来描述复杂数字地面模型 ,给出了快速生成优化的三角网格的算法 .实验结果证明该方法简洁有效 ,同时达到了很好的主观视觉效果 .数据处理过程中生成的STL格式文件可以直接用于快速模型制作 .

Spline surface patches based on 4 side region and triangular net are often adopted to express the shape of ground. Combining the merit of these two methods, a new method based on 3 side B B surfaces is introduced to describe complex digital ground model. Triangulation algorithm and redundant data reduction algorithm are presented to generate optimum triangular net, which are proved laconic and effective in large scale data examples. The STL file generated in the algorithm can be used in fast manufacturing the real model of the ground.