融合第三次国土调查成果的地表覆盖测绘数据更新方法与应用

Method and application of land cover surveying and mapping data updating based on the results of the third land survey

地表覆盖测绘数据更新为地理国情普查工作核心,也是地理国情指标信息统计与发布的数据基础。本文引入改进蚁群聚类算法,融合第三次国土调查成果的地表覆盖测绘数据,并将其聚类处理,实现地表覆盖测绘数据的分类。由基于要素的地表覆盖测绘数据更新方法,对比分类后地表覆盖测绘数据中新旧数据,检测变化要素,将出现变化的数据要素存入地理国情监测数据库中,实现地表覆盖测绘数据更新。

The updating of surface coverage surveying and mapping data is the core of the general survey of geographical conditions,and it is also the data basis for the statistics and release of geographical conditions index information.This paper introduces the improved ant colony clustering algorithm,integrates the third land survey results of surface coverage mapping data,and clusters them to achieve the classification of surface coverage mapping data;based on the element-based surface coverage mapping data update method,compares the new and old data in the classified surface coverage mapping data,detects the changing elements,and stores the changed data elements in the geographical conditions monitoring In the survey database,it can update the surface coverage survey data.