Abstract: To realize the non-closed surface reconstruction accurately, a threshold segmentation algorithm based on triangle perimeter which could be used to remove the enclosed spurious surface was proposed. The sampling points were selected from triangle perimeter, and the threshold was calculated automatically by comparing the Enclidean distance between sample points and input points. Thus the non-closed surface was obtained by threshold segmentation from enclosed surface. The experiments results showed that the proposed method had low complexity, high efficiency, and strong robustness. Moreover, it could remove the spurious surface but not affect the precision of original surface.

Key words: poisson, triangle, threshold, spurious surface, surface segmentation

摘要： 为了精确实现非封闭曲面的三维重建，提出一种基于曲面三角面片周长的阈值分割方法，首先计算泊松算法生成曲面的三角面片周长选取采样点，然后通过比较样本点与原始输入点之间的欧氏距离自动计算阈值对生成曲面进行分割。实验结果表明，该算法能准确有效地去除伪封闭曲面而不影响原生成曲面的精度，且算法复杂度低、时间效率高、鲁棒性强。

关键词: 泊松算法, 三角面片, 阈值, 伪曲面, 曲面分割