基于等角度变比例投影的矿体轮廓线自动匹配方法研究  

Automatic matching of ore body contour line based on equal-angle and variable proportion projection

作　　者：田宜平 刘维安 张夏林 Tian Yiping;Liu Weian;Zhang Xialin(School of Computer Science,China University of Geosciences(Wuhan),Wuhan 430078,China;Engineering Technology Innovation Center for Mineral Resources Exploration in Bed Rock Area,Ministry of Natural Resources,Guiyang 550081,China)

机构地区：[1]中国地质大学(武汉)计算机学院,武汉430078 [2]自然资源部基岩区矿产资源勘查工程技术创新中心,贵阳550081

出　　处：《地质科技通报》2020年第1期175-180,共6页Bulletin of Geological Science and Technology

基　　金：国家自然科学基金重点项目(U1711267)。

摘　　要：详细讨论了基于矿体轮廓线的三维建模方法中涉及的匹配对应、分支和构面建模等主要问题.针对轮廓线匹配问题提出了一种以矿体整体走向为投影方向,以相邻剖面中轮廓线总面积之比为缩放比例的等角度变比例投影算法,将不共面的轮廓线投影到同一平面中以完成共面轮廓线的匹配拓扑分析,从而解决轮廓线的对应问题.为了解决轮廓线的分支问题,设计了一种距离反比加权平均和样条函数相结合的自适应插值算法.最后通过采用实际矿山数据建模,对本文所提出的方法进行了有效性验证.The main problems such as matching correspondence,branching and surface reconstruction in ore body three-dimensional modeling method based on contour lines are discussed in detail in this paper.To solve the problem of contour matching,an equal-angle variable proportion projection algorithm is proposed,which takes ore body trend as projection direction and takes ratio of contour total area of adjacent sections as scaling proportion.Contour lines of different sections are projected into a same plane to complete topological analysis of coplanar contour lines,so as to solve the matching correspondence problem of contour lines.In order to solve the branching problem of contour lines,an adaptive interpolation algorithm combining inverse distance weighted average and spline function is designed and implemented in this paper.Finally,the method proposed in this paper is validated effectively by using actual mine data modeling.

关 键 词：三维建模 轮廓线匹配 拓扑分析 空间插值 

分 类 号：TP31[自动化与计算机技术—计算机软件与理论]