摘要
从车载导航的实际应用出发,提出了立交桥的三维数据模型。工程实践表明,此模型对数据采集和编辑处理工作具有实际意义。
In the course of collection and edition, the data model, the collecting method and the quantity control means of 3D data are much more complicated compared with 2D data. A compatible 3D data model of cloverleafjunction is very important for collecting data of cloverleafjunction of city. Because of affiliating 3D information, catching between data is no longer a simple complete consistence among coordinates of nodes, but is divided into the 2D catching for plane coordinate （ x, y） consistence and the 3D catching for stereoscopic coordinate （x, y, z） complete consistence. For practical application of navigation of vehicle, the given data model of cloverleafjunction in this paper is preferably capable of expression of cloverleafjunction of city. The practice of data production ona large scale indicates that the data model is feasible to collect data of cloverleafjunction.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2005年第12期1111-1114,共4页
Geomatics and Information Science of Wuhan University
关键词
车载导航
立交桥
数字摄影测量
三维数据
空间数据模型
空间数据采集
navigation of vehicle
cloverleafjunction
digital photogrammetry
3D data
spatial data model
spatial data collection
