摘要
车载式近景目标3维测量系统,采用激光扫描仪获取建筑物立面点云。激光点云仅具有扫描仪坐标系下的坐标,不便于其他数据融合进行3维建模。文中根据系统的特点和要求,通过建立相应的坐标系,利用已有或优化的坐标转换模型确定坐标系之间的坐标转换关系。依据基准点与载体平台GPS接收机之间同步观测数据将激光点云在扫描仪坐标系下的坐标经过多次坐标转换,得到基准点所在当地坐标系下的坐标。使系统实现了满足精度要求的建筑物立面激光点云的定位工作。
Carrier-system of close shot target three-dimension measure uses LS scanner to obtain dot-cloud of building-side, the dot-cloud coordinations are only in the scanner coordinate system, which is not convenient to inosculate data and constitute 3D-model. This paper establishes the relative coordination systems based on the character and requirement of this system, determines the coordinate transform frame between them by existing and renewed transform models. According to the datum marks and the observed data between it and GPS receiver on the carrier-platform, the dot-cloud coordinations of the building-side scanned by LS is transferred into the local coordinations by some kind of coordinate transform models. The positioning of scanned side is finished within precision requirement.
出处
《测绘科学技术学报》
北大核心
2006年第1期59-61,共3页
Journal of Geomatics Science and Technology
基金
近景目标三维测量技术国家信息领域863项目(2003AA133040)
"地球空间环境与大地测量"教育部重点试验室测绘基础研究基金项目(149990324233-04-05)
关键词
车载式近景目标
维测量系统
激光点云
坐标转换
定位
carrier-system of close shot target 3D-measure
dot-cloud of LS
coordination transform
positio- ning
