论文部分内容阅读
目前,在滑坡监测方面,三维激光扫描普通监测方法的精度无法达到仪器精度的级别.为提高三维扫描监测方法的精度,提出了一种基于固定桩点的新型监测方法.以室内试验和金坪子滑坡Ⅱ区前缘为研究对象,在“面式监测”区域布置目标靶体,在固定桩点上不同时间序列下进行扫描,采用迭代临近点算法(ICP,Iterative Closest Point)配准每期扫描数据和重心法对目标靶体点云进行分析.研究结果显示:采用该方法后三维扫描仪位置移动引起的误差减小了,验证了固定桩点方法的可行性.固定桩点方法不仅提高了监测精度,而且仅依靠三维激光扫描仪即可进行滑坡监测,提高了现场监测效率,有很好的应用前景.
At present, the accuracy of 3D laser scanning general monitoring method can not reach the level of instrument precision in landslide monitoring.To improve the accuracy of 3D scanning monitoring method, a new monitoring method based on fixed pile points is proposed.An indoor test and Jinping The front edge of zone Ⅱ of sub-landslide is the object of study. The target targets are arranged in the “area monitoring” area and scanned under different time series on fixed piles. The registrations are based on Iterative Closest Point (ICP) The results show that the error caused by the movement of the position of the three-dimensional scanner is reduced, and the feasibility of the method of fixed pile point is verified.The method of fixed pile point Not only improve the monitoring accuracy, but also rely on three-dimensional laser scanner for landslide monitoring, improve the efficiency of on-site monitoring, has a good prospect.