【摘要】 针对小范围危岩在单体类圆台形边坡精细化三维模型生产中的不足，提出一种基于边坡坡度对危岩地段开展环绕框架式加渐进式影像数据采集方法，分层分域采集边坡危岩的影像信息，并运用倾斜摄影技术进行三维重建；同时运用传统模仿五镜头航摄建模方法在桂林某铁路段危岩边坡开展了三维重建对比实验并进行了精度分析。分析表明，该方法可以高质地建立类圆台形边坡危岩的实景三维模型，有利于对危岩隐患进行区域锁定与阶段性监测，并为基础空间体数据采集提供较优选择。更多还原

【Abstract】 Aiming at the shortcomings of small-scale dangerous rocks in the production of refined 3D models of single-sided slopes similar to truncated cones, a frame-based and progressive image data acquisition method for dangerous rock sections based on the slope is proposed. The image information of the dangerous rock on the slope is collected, and the oblique photography technology is used for 3D reconstruction. At the same time, the traditional imitation five-lens aerial photography modeling method is used to carry out a 3D reconstruction and comparison experiment on a dangerous rock slope in a railway section in Guilin, and the accuracy analysis is carried out. It is proved that this method can be used to build 3D models of dangerous rock with high texture. It is conducive to regional locking and phased monitoring of hidden dangers of dangerous rocks, which could provide a better choice for basic spatial volume data collection.更多还原