实景三维模型在地形图质量检验中的应用研究

Research on the Application of Real Scene 3D Model in Topographic Map Quality Inspection

针对传统地形图地理精度质量检验方法存在的人物力消耗大,部分不易达或不可达检验区域地物检验难以进行以及检验结果多为文字描述,拓展应用性不佳的问题,提出一种利用无人机倾斜摄影测量构建实景三维模型获取高分辨率的地物信息进行地形图质量检验的方法。结合甘南州州级基础测绘检验项目,通过无人机倾斜摄影构建实验区实景三维模型,并基于模型获取地理要素信息完成对大比例尺地形图地理精度的质量检验。实验结果表明:实景三维模型方法在不易达、不可达区域能够实现地理精度检验,对比传统质检方法结果,实景三维方法提升了质检的效率与可靠性,且质检结果结合三维模型,更利于二次开发与拓展应用。

Aiming at the problems that traditional topographic map geographic accuracy quality inspection methods have large human power consumption,some inaccessible or unreachable inspection areas are difficult to perform,and the inspection results are mostly written in text,the application is not good,and a method is proposed.Man-machine oblique photogrammetry constructs a real-scene three-dimensional model to obtain high-resolution feature information.Combining with the Gannan Prefecture basic surveying and mapping inspection project,the real-life 3D model of the experimental area was constructed through drone tilt photography,and the geographic element information was obtained based on the model to complete the quality inspection of the geographic accuracy of large-scale topographic maps.The experimental results show that the real-scene 3D model method can achieve geographic accuracy inspection in inaccessible and inaccessible areas.Compared with the results of traditional quality inspection methods,the real-scene 3D method improves the efficiency and reliability of quality inspection,and the combination of quality inspection results with 3D models is more beneficial secondary development and application expansion.