空地一体三维建模技术在崩塌点调查中的应用

Application of 3D Modeling Technology of Air-ground Integration in the Investigation of Collapse Disaster

在山区高危边坡崩塌地质灾害精细化调查中,人工调查方式工作效率低且存在极高危险性,传统的无人机倾斜摄影测量技术获取的实景三维模型分辨率低,山体细部纹理模糊,难以全面地观测病害坡体或危岩体结构裂隙发育情况。本文提出一种航空影像融合近地影像的空地一体三维建模技术,经验证,空地一体三维建模技术丰富了实景三维模型的侧面纹理,提高了模型分辨率,可满足崩塌隐患点灾害精细化调查需求。

In the refined survey of high-risk slope collapse geological disasters in mountainous areas,manual survey methods are inefficient and extremely dangerous.The real-scene 3D model obtained by traditional drone tilt photogrammetry technology has low resolution,and the detailed texture of the mountain is blurred,making it difficult to comprehensively observe the development of diseased slopes or structural fissures of dangerous rock masses.This paper proposes an air-ground integrated 3D modeling technology that combines aerial images with close-range images.It has been verified that the air-ground integrated 3D modeling technology enriches the side texture of the real 3D model,improves the model resolution,and satisfies the refinement of collapsed hidden danger points investigation.