无人机摄影测量在地理国情调查中的应用

Application of UAV Photogrammetry in Geographical Conditions Survey

利用无人机倾斜摄影测量技术进行地理国情调查作业,通过对大面积范围内地物影像数据的全方位采集,建立测区高精度实景三维模型,为研究区地理国情调查提供数据基础,然后通过平面精度、高程精度以及几何精度3个方面对三维模型成果精度进行分析评定,评定结果均满足规范及生产使用要求。无人机倾斜摄影测量的降本增效以及自动化程度的提高,为地理国情调查提供了便捷有效的作业方式,在保障基础数据精度直连给的同时,大大提升了生产作业效率。

In this paper,the oblique photogrammetry technology of UAV is used to carry out geographical conditions survey.Through the comprehensive collection of large-area feature image data,the high-precision 3D real scene model of the survey area is established to provide data basis for geographical conditions survey of the study area.Then,the accuracy of the 3D model results is analyzed and evaluated from three aspects of plane accuracy,elevation accuracy and geometric accuracy,and the evaluation results all meet the standards and production and use requirements.The development and progress of UAV oblique photogrammetry as well as the development and progress of automation provide a convenient and effective operation method for geographical conditions survey,which greatly improves production efficiency while ensuring the accuracy of basic data.