基于立体影像在地表覆盖信息提取中的应用研究  

Research of the application in extracting surface coverage information based on stereoscopic images

作　　者：欧阳兆聪 OUYANG Zhaocong(Guangdong Zhuhai Engineering Survey Institute,Zhuhai 519000,China)

机构地区：[1]广东省珠海工程勘察院,广东珠海519000

出　　处：《经纬天地》2024年第1期54-57,共4页Survey World

摘　　要：为了提高地理国情监测项目中地表覆盖图斑属性提取的正确性以及图斑界线定位的准确性,需要将不同分辨率的立体影像应用于地理国情监测试生产中。试生产中,基于航空立体影像与遥感卫星立体影像提取地表覆盖图斑,充分利用立体影像中的高程信息,有效提取易于混分的灌木林、草地、耕地等地物种类。试验结果表明,对于易于混分的植被类型,使用分辨率优于1 m的立体影像可以充分反映植被的高度信息,有利于地表覆盖图斑的有效提取与判读,在大幅减少外业工作量的同时保证了数据质量;总结出了基于立体影像的地理国情监测地表覆盖图斑提取的技术路线,可为今后此类项目的开展提供有益的参考依据。In order to improve the accuracy of extracting surface coverage patch attributes and locating patch boundaries in geographical and national monitoring projects,it is necessary to apply stereo images of different resolutions to the production of geographical and national monitoring testing.In the trial production,surface cover patches are extracted based on aerial stereo images and remote sensing satellite stereo images,by full utilizing the elevation information in the stereo images to effectively extract easily distinguishable land types such as shrubs,grasslands,and cultivated land.The experimental results show that for vegetation types that are easy to distinguish,using stereo images with a resolution better than 1m can fully reflect the height information of vegetation,which is conducive to the effective extraction and interpretation of surface cover patches,greatly reducing outdoor workload while having data quality ensured.A technical route for extracting land cover patches from geographic national monitoring based on stereoscopic images has been summarized,which can provide useful reference for the development of such projects in the future.

关 键 词：立体影像 高分辨率 地理国情监测 地表覆盖图斑 信息提取 

分 类 号：P237[天文地球—摄影测量与遥感]