基于六角格网的面状地质要素表达方法研究  

Method of Expression for Polygonal Geological Features Based on Hexagonal Grids

作　　者：郭宏伟 魏海平[1] 于靖宇 张良 蔡亚峰 GUO Hongwei;WEI Haiping;YU Jingyu;ZHANG Liang;CAI Yafeng(Institute of Geospatial Information,Information Engineering University,Zhengzhou 450001,China)

机构地区：[1]信息工程大学地理空间信息学院,河南郑州450001

出　　处：《测绘与空间地理信息》2023年第11期107-110,114,共5页Geomatics & Spatial Information Technology

摘　　要：由于六角格网在不同层级中的自相似性较差,当前对面状地质要素的表达主要是采用相同尺寸的方式,不能同时兼顾要素表达的详细程度和减少数据的冗余。本文提出一种多尺寸混合六角格网的方法,对面状地质要素进行量化表达。首先,基于孔径4的剖分形式,构建不同层级尺寸的六角格网;然后,利用面积比占优法依次迭代计算面状地质要素所对应的多尺寸混合六角格网单元;最后,经实验验证,与不同层级尺寸的六角格网对比分析,本文所提出的方法在格网单元数量和面积相对误差方面都较低,对面状地质要素的表达效果和数据存储较为有效。At present,the hexagonal grids express polygonal geological features mainly based on the same size,because of its poor self-similarity.This approach can’t ensure the expression details of polygonal geological features and reducing the redundancy of data storage at the same time.In this paper,a method of hybrid multi-size hexagonal grid is proposed to quantitatively express polygonal geological features.Firstly,the different level sizes of hexagonal grids are established based on the subdivision of aperture four.Then,the hybrid multi-size hexagonal grid cells are calculated iteratively corresponding to the polygonal geological features based on the area ratio dominance method.Finally,the validity of the method in this paper is verified by experiment.The results in this method are lower in both the number of hexagonal grid cells and the area relative errors than different level same size of hexagonal grids.This method is more effective in the expression effect and data storage of polygonal geological features.

关 键 词：六角格网 面状地质要素 孔径4 多尺寸混合 

分 类 号：P208[天文地球—地图制图学与地理信息工程]