摘要
本文提出了利用空间数据库中已有的DEM、DOM、DLG和新影像进行三维变化检测,在此基础上提取二维变化信息的技术框架。探讨了基于DEM的VLL物方影像匹配方法、多尺度表达的数字高程模型,以及自适应窗口大小和变化阈值的确定等用于三维变化检测的关键技术。这些思想和方法在实验中得到初步证实。
In this paper,a technical framework of 3D change detection based on existing Digital Elevation Model(DEM),Digital Ortho image(DOM),Digital Line Graph(DLG)and new stereo imagery is presented.And many key techniques such as VLL matching,multi-scale DEM,self-adapted matching window and thresholds for the framework are discussed and investigated deeply.The idea and method are verified elementarily in our experiments.
出处
《测绘科学》
CSCD
北大核心
2007年第1期49-50,共2页
Science of Surveying and Mapping
