无人机倾斜影像三维建模中的空地融合研究

Unmanned Aerial Vehicle Tilting Photography Air-Ground Fusion Research in 3D Modeling

无人机倾斜摄影测量弥补了航空摄影测量无法获取地物侧面纹理信息的缺陷,而且可以快速、自动获取大面积城市建筑物三维模型。但是,基于倾斜摄影建立的三维模型也存在一些问题,比如模型变形、纹理缺失等,导致所建立的模型存在质量问题。空地融合精细化实景三维建模技术将空中倾斜影像和近景影像的数据源结合构建精细化实景三维模型,利用地面影像弥补空中拍摄角度造成的地物遮挡、空中影像分辨率较低的问题,这项技术取得了较好的建模效果。

Unmanned aerial vehicle tilting photogrammetry compensates for the defects that aerial photogrammetry can not obtain the side texture information of the object,and also provides a new method for quickly and automatically acquiring the 3 D model of large-scale urban buildings.However,there are some problems in the 3 D model based on tilt photogrammetry,such as model deformation,texture loss,etc.It leads to the quality problem of the established model.The air-ground fusion refined real scene 3 D model technology combines the data source of the aerial tilt image and the ground close-range image to build a refined real scene 3 D model.It uses ground close-range image to compensate for the problem of ground object occlusion caused by aerial shooting angle and low resolution of aerial image.This technology has achieved a good modeling results.