基于轮廓线三维矿体表面重建的一种改进算法

李兆亮, 王林飞, 熊盛青, 罗锋, 闫浩飞, 朱自强

An improved algorithm for surface reconstruction of 3D orebody based on contour line

Zhao-Liang LI, Lin-Fei WANG, Sheng-Qing XIONG, Feng LUO, Hao-Fei YAN, Zi-Qiang ZHU

图2 分支矿体表面模型的建立过程 a—原始数据为两簇闭曲线集合,每组曲线近似位于一个平面上;b—每簇曲线在所在平面上,添加分支节点和外扩的外包并实现带洞三角剖分和边交换;c—将外扩的外包回复到三维状态;d—利用同步前进方法实现两闭曲线的连接,实现分支模型的建立

Fig.2 The establishment process of the surface model of the branch orebody a— two clusters of closed curves are the original data, each set of curves approximately located in a plane; b— on the plane of each cluster of curves, add branch points and enlarged convex hull, achieve triangulation with holes and exchange edges; c— the outspread outsourcing back to the three-dimensional state; d— using synchronous forward method to achieve the connection of the two closed curves, the branch model is established