倾斜摄影测量中像控点布设方案研究与分析

Research and Analysis on the Layout Scheme of Image Control Points in Oblique Photogrammetry

经济社会不断发展,各种测绘新设备、新技术不断涌现,以无人机倾斜摄影测量技术为代表的测绘新技术已经被广泛应用于各行业中。像控点作为无人机倾斜摄影测量技术中极为重要的位置参数,直接影响成果的几何精度,因此,开展像控点布设的方法研究尤为重要。文中以某城市实景三维建设项目为试验,综合设计了9中不同像控点方案,并通过像控点布设样式与数量对三维模型精度的影像进行深入研究。试验结果证明了文中设计的9种像控点布设方案均能满足相关规范要求,同时也证明了像控点数量的增加,三维模型精度趋于稳定,但是当像控点增加到一定数量时,实景模型成果精度提升不再明显。

With the continuous development of the economy and society, various new surveying and mapping equipment and technologies continue to emerge. New surveying and mapping technologies represented by unmanned aerial vehicle oblique photogrammetry have been widely applied in various industries. As an extremely important positional parameter in unmanned aerial vehicle (UAV) oblique photogrammetry technology, image control points directly affect the geometric accuracy of the results. Therefore, the method of deploying image control points is particularly important. This article takes a certain area as the experimental area, designs 9 different layout schemes of image control points, and compares the accuracy of results under different schemes to verify the influence of the layout scheme and number of image control points on the accuracy of results. The results show that all 9 layout schemes of image control points can meet the accuracy requirements. As the number of image control points increases, the accuracy of the results of the real scene model tends to stabilize. However, when the number of image control points increases to a certain amount, the improvement in the accuracy of the results of the real scene model is no longer significant.