基于WorldView-3卫星带状影像生产地形级地理场景数据

Terrain-level geographic scene data production based on WorldView-3 satellite strip image

实景三维中国建设要求地方层面生产2 m格网DSM、DEM及优于0.5 m分辨率DOM的地形级地理场景数据。对WorldView-3卫星带状影像数据,采用传统的灰度匹配、特征匹配、变换域法匹配的方法,无法获得足够满足要求的连接点。本文采用基于频率相位匹配辅助的概率松弛控制点匹配方法进行连接点匹配,获得的满足精度要求的连接点数量多且分布均匀,后续生产的DSM、DEM及DOM地形级地理场景数据精度满足要求,为实景三维西藏察隅试点建设顺利开展提供了技术支撑。

3D real China construction requires the local level to produce terrain-level geographic scene data including 2 m grid DSM,DEM and better than 0.5 m resolution DOM.For the WorldView-3 satellite strip image data,the traditional gray level matching,feature matching and transform domain matching methods can not obtain enough connection points to meet the requirements.The probability relaxation control point matching method based on frequency phase matching is used to match the connection points,and the number of connection points meeting the accuracy requirements is large and evenly distributed.The accuracy of the terrain-level geographic scene data of DSM,DEM and DOM produced subsequently meets the requirements,which provides technical support for the smooth implementation of the 3D real Tibet Chayu pilot construction.