基于DPGrid系统的正射影像数据快速更新

Digital Orthophoto Map rapidly updating based on DPGrid system

针对单人单机数字摄影测量工作站无法满足大规模基础测绘数据生产要求的现状,该文阐述了应用新一代航空航天数字摄影测量处理平台DPGrid自动、快速获取高分辨率正射影像图的工作流程和关键技术,并利用DPGrid OrthoUpdate实现了北京和包头城区1∶5000DOM更新,结果表明利用已有的DEM和DOM数据,DPGrid OrthoUpdate可以实现中小比例尺数字正射影像图的高效率更新。

Aiming to the current status that it is difficult for the single stand-alone digital photogrammetric workstation to meet the demands on large-scale basic surveying and mapping data production, the paper stated the work flow and key techniques of automatically and quickly generating high-resolution Digital Orthophoto Maps based on DPGrid system, the new-generation digital aerospatial photogrammetrie processing platform. Finally, the update of 1 ： 5000 Digital Orthophoto Map for Beijing and Baotou urban area was realized by using DPGrid OrthoUpdate. Result showed that DPGrid could achieve the efficient update of urban area DOM in medium and small scale with given DEM and DOM data.