山区公路典型地质灾害倾斜摄影三维建模与分析方法研究

Research on Oblique Photography 3D Modeling and Analysis Method of Typical Highway Geological Disasters

传统基于遥感技术开展公路地质灾害调查分析时,容易出现视觉误差和死角,难以全面、准确地对地质灾害进行判别。本文提出了一种针对山区公路典型地质灾害的倾斜摄影三维建模与分析方法,可以从任意视角对地质灾害体进行观察,并可进行定量计算和分析。首先,根据高原山区公路地质灾害区域的地形特点,配置了无人机硬件平台。然后,针对两种公路典型的地质灾害(滑坡、泥石流),系统地阐述了倾斜摄影三维建模与分析方法,包括航飞拍摄、照片检查和预处理、三维立体重建、灾害分析与应用等4个步骤。使用本文方法对3个实际的公路地质灾害点开展了三维建模与分析实验,取得了良好的效果。

When using the traditional remote sensing technology to carry out the investigation and analysis of highway geological disasters,visual error and dead angle are prone to occur,so it is difficult to judge the geological disasters comprehensively and accurately.This paper presents an oblique photography3 Dmodeling and analysis method of typical highway geological disasters.The geological disasters can be observed from any perspective and can be quantitatively calculated and analyzed.First,the UAV hardware platform is configured based on the terrain features of geological disaster in plateau mountain area.Then,the oblique photography 3 Dmodeling and analysis method,including aerial photography,photo inspection and pretreatment,3 Dreconstruction,and disaster analysis and application,is proposed for two kinds of typical geological disasters(landslide,debris flow).Experiments are carried on three actual road geological disaster areas and achieve good results.