基于无人机倾斜摄像技术的土地测量研究

Research on Land Survey Based on UAV Tilt Camera Technology

为了探究无人机倾斜摄像技术在土地测量中的应用,首先对无人机倾斜摄影技术基本理论进行了分析;然后以我国浙江省德清市某试验区域为背景,以地籍图测量为例,对数据采集及处理和地籍图矢量化进行了介绍;最后结合RTK实地测量,对航测技术的精度进行了评定。试验及研究表明,第一,无人机摄影测绘技术具有自动化程度高、测绘高效率及耗费时间短等优点;其次,地籍图精度评定结果表明,航测技术所得精度完全满足当前我国对1:1000地籍图测量和1:500地形图测量精度要求;最后,无人机倾斜摄像技术一次性覆盖面少、相机质量低和获取的数据量巨大目前仍旧为目前航测技术推广使用中的瓶颈,有待于我们展开更多的研究来实现技术突破。

This paper takes a test area in Deqing City of Zhejiang Province as the background,and takes cadastral survey as an example to explore the application of UAV tilt camera technology in land survey.Firstly,the basic theory of UAV tilt photography is analyzed.Then the data acquisition and processing and the vectorization of cadastral survey are introduced.Finally,combining with RTK field survey,the accuracy of aerial survey technology is evaluated.Test and research show that,firstly,UAV photogrammetry technology has the advantages of high automation,high efficiency and short time consumption;secondly,the accuracy evaluation results of cadastral map show that the accuracy obtained by aerial survey technology fully meets the current requirements of 1:1000 Cadastral Map Survey and 1:500 Topographic Map Survey in China;finally,the UAV tilt camera technology has few one-time coverage,low camera quality and huge amount of data.At present,it is still the bottleneck in the promotion and use of aerial survey technology,which needs more research to achieve technical breakthrough.