Advantages of oblique photography combined with ground-based laser point cloud modeling

Aug 03, 2023

Oblique photography has high efficiency, and can obtain a wide range of urban buildings and terrain images in a short time. However, due to its high flight height, it is easy to be blocked by vegetation or eaves, resulting in the lack of texture of ground objects, resulting in the inability to generate a complete encrypted point cloud in the process of aerial triangulation. The 3D laser scanning technology can be used to repair the missing point cloud in the blind area. Compared with the image point cloud, the laser point cloud has higher density and accuracy, and the space-three encrypted point cloud has higher generation efficiency. Therefore, the combination of the two can achieve complementary advantages, which not only ensures the production efficiency, but also ensures the integrity of the point cloud in the obscured area of the oblique photography, and improves the precision of the model.