摘要
提出基于机载LiDAR与航片组合的单片测图方法,利用激光点云提供的高精度地面三维数据,结合航拍记录的POS数据进行解算,获取航片外方位元素,实现对航片的空三加密,制作数字正射影像DOM（document object model）,整个流程不需要外业控制测量。工程实践结果表明,利用该方法获得的DOM可满足1∶2 000比例尺成图精度要求,能够有效减少外业工作量,对数字线划图（digital line graphic,DLG）的制作具有重要意义。
This paper puts forward a single-chip mapping method based on the combination of the airborne LiDAR and aerial photographs.First,we take advantage ofhigh-precision ground three dimensional dataprovided by laser points cloud,then calculaterecords of POS datagained by aerial photographs,hence we getaerial photographs＇ elements of exterior orientation,thus we could encipheraerial triangulation and make DOM.The whole process does not need outside industry control measurement.Practice results show that DOMobtained by this method meets the 1∶2 000-scale mapping accuracy requirements,can effectively reduce the workload,a lot of manpower,material and time,making it important for digital line graphic production.
作者
李江伟
陈海波
吴健
赵莹
江宇
LI Jiangwei;CHEN Haibo;WU Jian;ZHAO Ying;JIANG Yu(TianjinRichsoft Electric Power Information Technology Co.,Ltd.,Tianjin 300384,China;State Grid Corporation of China,Beijing 100031,China;EconomicS-Technology Research Institute,State Grid Shandong Electric Power Company,Jinan 250021,China;Tianjin Institute of Geotechnical Investigation Surveying,Tianjin 300191,China)
出处
《测绘地理信息》
2018年第5期21-23,共3页
Journal of Geomatics
基金
国家电网公司科技资助项目(SGIT0000YXJS1700407)
关键词
激光点云
数码航片
单片测图
数字正射影像
数字线划图
laser point cloud digital aerial photographs
single-chip mapping
document object model
digital line graphic
