张又文;谭正华;文阳;李国泰;

• 1:湘潭大学信息工程学院
• 2:中南大学数字矿山研究中心

摘要(Abstract)：

针对快速生成复杂矿体的高精度投影轮廓线的实际需求问题,该文提出一种基于多级网格的矿体投影轮廓线生成算法。将构成矿体的三角网格模型投影至指定平面,生成二维数据集合;使用基于四叉树的多级网格划分集合,将三角面片存储至对应的网格单元中,建立三角面片与网格的索引关系;在每个叶子结点对应的网格单元中,生成均匀点列来判断单元是否被三角面片填满,对被填满的网格单元,使用大小与位置均等同于该单元的矩形面片来代替单元中的三角面片;最后对剩余的三角面片和矩形面片进行布尔运算求并,得到投影轮廓线。实验结果表明,该算法速度较快,生成的投影轮廓线精度高,可满足实际工程应用。

关键词(KeyWords)： 复杂矿体;投影轮廓线;多级网格;布尔运算

Abstract:

Keywords:

基金项目(Foundation):

作者(Authors): 张又文;谭正华;文阳;李国泰;

DOI: 10.16251/j.cnki.1009-2307.2020.09.022

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