无人机倾斜摄影实景三维建模中像控点影响精度分析

Accuracy Analysis of Image Control Points in Real Scene 3D Modeling of Drone Tilt Photography

摘要: 针对像控点布设方案对实景三维模型精度影响分析较少的情况，本文以某地实景三维区域为实验区，设计9种不同的像控点布设方案，根据不同的像控点布设方案选择像控点进行空三加密以及实景三维模型构建。对不同方案下构建实景三维模型的点位精度与边长精度进行对比分析，结果表明，9种像控点布设方案下构建的模型无论是点位精度还是边长精度均满足要求，模型精度随着像控点布设的数量增加并趋于稳定。本文的研究可为无人机倾斜摄影测量相关项目中像控点布设方案的设计提供参考与借鉴。

Abstract: In response to the lack of analysis on the impact of image control point layout schemes on the accu-racy of real 3D models, this article takes a real 3D area in a certain area as the experimental area, designs 9 different image control point layout schemes, and selects image control points for spatial encryption and real 3D model construction based on different image control point layout schemes. A comparative analysis was conducted on the point accuracy and edge length accuracy of con-structing realistic 3D models under different schemes. The results showed that the models con-structed under 9 different schemes of image control point placement met the requirements in both point accuracy and edge length accuracy, and the model accuracy tended to stabilize as the number of image control point placement increased. The research in this article can provide reference for the design of image control point layout schemes in unmanned aerial vehicle tilt photogrammetry related projects.