基于GF-7立体卫星影像生产5m格网DEM的解决方案  

The solutions in producing 5-meter grid DEM based on GF-7 stereoscopic satellite images

作　　者：田丹 赵巍 李英利 白晓 TIAN Dan;ZHAO Wei;LI Yingli;BAI Xiao(The First Institute of Photogrammetry and Remote Sensing,MNR,Xi'an,Shaanxi 710054,China;College of Geomatics,Xi'an University of Science and Technology,Xi'an,Shaanxi 710054,China)

机构地区：[1]自然资源部第一航测遥感院,陕西西安710054 [2]西安科技大学测绘科学与技术学院,陕西西安710054

出　　处：《测绘标准化》2024年第2期95-100,共6页Standardization of Surveying and Mapping

摘　　要：高分七号(GF-7)立体卫星影像可用于5 m格网数字高程模型(DEM)的生产,然而在规模化生产过程中仍然存在很多问题,如DEM晕渲异常、DEM和立体像对不套合、形态表达失真等。本文针对上述问题,分析了问题可能出现的原因,提出了相应的解决方案,完善了基于高分七号立体像对生产5 m格网DEM的生产工艺流程,可为类似项目的设计和生产提供技术参考。The stereoscopic satellite images of GF-7 can be used to produce 5-meter grid Digital Elevation Model(DEM).However,there are still numerous issues in DEM production,such as rendering anomaly,mismatch between DEM and stereoscopic image,and distortion of morphological expression.There fore,this paper addresses the aforementioned issues by analyzing the potential causes and proposing corresponding solutions,and it improves the production process of 5-meter grid DEM based on GF-7 stereo pairs,which can provide technical references for the designing and production of similar projects.

关 键 词：高分七号 5m格网数字高程模型 数字高程模型生产 

分 类 号：P236[天文地球—摄影测量与遥感]