In order to improve the vulnerability during Yardang modeling caused by occlusion in oblique photography,multi-source spatial data was collected using equipment such as ground cameras,drones,and three-dimensional (3D) laser scanners. By combining close-range photogrammetry,oblique photogrammetry,and laser scanning technology,Yardang modeling methods for different scenes were studied,and the modeling accuracy and effect were analyzed. The experimental results show that based on the flyby and close-range images,fine modeling is conducted by using laser point cloud data. Compared to large-scale oblique modeling,the plane accuracy is improved by 40％;the elevation accuracy is improved by 16％,and the surface texture is more refined. This can provide high-precision reference data for studying the changes in Yardang landforms and the protection of geological relics.
关键词
倾斜摄影/激光点云/融合建模/地质遗迹/雅丹地貌
Key words
oblique photography/laser point cloud/fusion modeling/geological relics/Yadang landform
维普
万方数据