基于稀疏三维散点的地下巷道可视化重建方案

摘要

In order to carry out 3D visualization reconstruction of underground tunnel, this paper presents a new method based on sparse 3D scattered points. According to the shape of the underground tunnel, a three-dimension mathematic model of tunnels with trapezium section is built up. Dividing the tunnel into segments, according to the sparse 3D scattered points to get the central position, length data and the vertexes of the tunnel's each segment, we can draw every surface of each segment, so as to reconstruct the whole tunnel. As is proved by experiments, this method needs only a small amount of three-dimension points, and has noise immunity and stability.%为了对地下巷道进行三维可视化重建,提出了一种基于稀疏三维散点的巷道可视化方案.根据地下巷道的形状规律,建立了梯形断面巷道的三维数学模型,将巷道分为多段,根据稀疏的三维散点得到每段巷道的中心线位置、长度数据和断面顶点,画出每段巷道的各个面,以完成整条巷道的重建.实验验证表明,该方法可视化巷道所需要的三维点数量很少,且有一定抗噪性,稳定性.