倾斜摄影测量技术在城市1∶500地形图测量中的应用

Application of UAV Oblique Photogrammetry in Urban 1∶500 Topographic Map Surveying

新时代,各类测绘技术的发展日新月异,先进设备、先进技术改善了部分传统测绘存在的弊端。传统的大比例尺地形测绘工作效率低,成图周期长,逐渐不能满足现代快速经济发展的需求。为了解决大面积1∶500地形图测量效率低的问题,探讨利用无人机倾斜摄影测量技术实现三维建模和1∶500地形图的测量的流程与方法,并对测图精度进行分析,实践表明,采用无人机倾斜摄影测量技术进行1∶500大比例尺地形图的测量,在满足测量精度的情况下,将常规全野外数据采集模式50%的工作转为内业数据处理,不但降低了生产成本,同时也将外业因天气等因素的影响将为最低,大幅度提高了测绘作业效率。

The new era has witnessed the significant and rapid development in topographic surveying and mapping technology,which helped improve the insufficiency of some traditional surveying and mapping due to the application of advanced equipment along with advanced technology.Traditional large-scale topographic surveying and mapping used to be inefficient and has a long mapping period,which gradually fails to meet the needs of modern rapid economic development.In order to solve the problem of low efficiency in large area 1∶500 topographic map surveying,this paper discusses the process and method of realizing three-dimensional modeling and 1∶500 topographic map surveying by using UAV oblique photogrammetry technology,and analyses the surveying accuracy.Practice shows that UAV oblique photogrammetry technology is used to survey 1∶500 large scale topographic map.Under the condition of satisfying the measurement accuracy,50%of the conventional full field data collection mode work has been transferred to indoor data processing,which not only results in the cut in production cost,and minimizes the influence related to the weather outdoors,and greatly improves the efficiency of surveying and mapping operation as well.