Research on Fine 3D Modeling of UAV Based on Multi-layer Data Fusion
In order to solve the problems of poor precision,unclear surface texture and poor geometric integrity of 3D model of buildings in traditional tilt photogrammetry,this paper presents a refined 3D modeling method based on UAV multi-altitude image data fusion.Combining with the multi-layer images of traditional tilt flight,close-range intelligent surround,hand-controlled surround and hand-held surround on the ground,the traditional tilt model of tilt photogrammetry is refined.The results show that the precision of 3D model,texture precision and geometric integrity of the 3D model constructed by this method are significantly improved compared with the traditional tilt photogrammetry model.