空地一体化的实景三维建模方法研究

Research on 3D Modeling Method Based on UAV Air-ground Integration

为了构建更加准确、精细的实景三维模型,解决单独依靠倾斜摄影手段构建三维模型时存在的拉花、破洞问题,本文提出一种综合倾斜摄影与近地面摄影相结合的三维模型建模方法,围绕城市街道创新设计分层次近景摄影,开展了对哈尔滨市中央大街的空中倾斜影像和近地面影像的外业采集工作,并利用Context Capture软件对空地影像进行融合建模和精度分析。实验结果显示,基于空地一体化的三维建模更为精细化,其点位中误差为3.32 cm,本文方法具有可行性和优越性。

In order to build more accurate and precise real 3D models and solve the problems of drawing and breaking holes in the construction of 3D models by means of oblique photography alone,this paper proposes a 3D model modeling method combining oblique photography and near ground photography.By using this method,the hierarchical close-ranged photography is designed creatively around the urban streets.The work of collecting the aerial tilt images and near ground images of Harbin Central Street is carried out.The fusion modeling and accuracy analysis of the open-air images are carried out by using the context capture software.The experimental results show that the quality of 3D modeling based on air-ground integration method is more refined and the accuracy is higher,and the mean square error of the points is 3.32 cm,which proves the feasibility and superiority of this method.