摘要
地理国情监测是获取地理国情信息的重要手段,而地表覆盖变化的检测又是地理国情监测中的基础性工作。论文利用遥感影像变化检测技术对地理国情监测中的地表覆盖变化进行分析,对2幅不同时期的卫星遥感影像进行预处理;利用前期地表覆盖矢量数据,并基于多特征提取的面向对象变化检测方法,自动提取地表覆盖变化范围。结果表明,遥感影像变化检测技术实现了变化图斑的自动提取,能够在一定程度上提高地理国情监测的自动化水平,提高作业效率。
Geographical national conditions monitoring is an important means to obtain geographic national condition information,and the detection of land cover change is the basic work in geographical national conditions monitoring.In this paper,remote sensing image change detection technology is used to analyze the change of land cover in the monitoring of geographical national conditions.Firstly,two satellite remote sensing images in different periods are preprocessed;then,using the previous surface coverage vector data and the object-oriented change detection method based on multi feature extraction,the surface coverage change region is automatically extracted.The results show that the remote sensing image change detection technology can realize the automatic extraction of change region,improve the automation level of geographical national conditions monitoring,and improve the operation efficiency.
作者
毛羽丰
张琪
MAO Yu-feng;ZHANG Qi(Nanj ing Institute of Surveying,Mapping&Geotechnical Investigation Co.Ltd.,Nanjing 210019,China)
出处
《工程建设与设计》
2021年第16期88-90,共3页
Construction & Design for Engineering
基金
南京市测绘勘察研究院股份有限公司科研项目(2019RD11,2019RD12)。
关键词
地理国情监测
遥感
变化检测
geographical national conditions monitoring
remote sensing
change detection