Analysis of the Influence of Image Control Point Spacing on 3D Model Accuracy Based on UAV Oblique Photogrammetry
Oblique photogrammetry has played an important role in the construction of 3D models in various fields of national construc-tion. The spacing of image control points has a direct impact on the accuracy of 3D models, and also determines the amount of indoor and outdoor work. The relationship between the spacing of image control points and the accuracy of aerotriangulation of 3D model is studied, and a reasonable and efficient point layout scheme is explored. In this paper, the UAV oblique photogrammetry is used to carry out the aerotriangulation and model construction in the case of multiple different image control point spacing layout schemes and only differential POS available, and analyze and discuss the aerotriangulation accuracy under each scheme. The results show that the aerotriangulation can meet certain accuracy with different image control point spacing and without image control points. In the case of different accuracy requirements, the appropriate image control point spacing layout scheme can be selected, which can not only meet the accuracy but also save the workload, and has certain reference significance for improving the quality and efficiency of UAV oblique photography modeling and its application.
oblique photogrammetryimage control point spacing3D modelingaccuracy analysis
万方数据
维普
