摘要
利用航天遥感卫星立体影像自动提取数字高程模型是当前研究的热点之一,PCI2012系统则是常用的遥感卫星影像处理系统。PCI2012系统在自动提取DEM时应用所采用的影像校正模型主要有通用成像模型和严格物理模型两种模型。本文基于PCI2012系统,利用WorldView-2立体影像数据,对同一地区分别采用以上两种不同的校正模型提取DEM,对获取的DEM精度进行了对比,并分析了影像DEM精度的主要因素。
Application of space remote sensing satellite stereo image automatic extraction of digital elevation model is one of the focu- ses of current research, and the PCI2012 system is a remote sensing satellite image processing system is used. The automatic extrac- tion of DEM image correction models used in PCI2012 are generic imaging model and rigorous model two models. In this paper, based on the PCI2012 system, using WorldView -2 stereo image data, for the same area respectively using the above two different correction model to extract the DEM, the accuracy of DEM is compared, and analyzes the main factors of the precision of DEM image.
出处
《测绘与空间地理信息》
2014年第1期138-140,144,共4页
Geomatics & Spatial Information Technology
