Volume parameter is the basic content of a spatial body object morphology analysis.However,the challenge lies in the volume calculation of irregular objects.The point cloud slicing method proposed in this study effect...Volume parameter is the basic content of a spatial body object morphology analysis.However,the challenge lies in the volume calculation of irregular objects.The point cloud slicing method proposed in this study effectively works in calculating the volume of the point cloud of the spatial object obtained through three-dimensional laser scanning(3DLS).In this method,a uniformly spaced sequent slicing process is first conducted in a specific direction on the point cloud of the spatial object obtained through 3DLS.A series of discrete point cloud slices corresponding to the point cloud bodies are then obtained.Subsequently,the outline boundary polygon of the point cloud slicing is searched one by one in accordance with the slicing sequence and areas of the polygon.The point cloud slice is also calculated.Finally,the individual point cloud section volume is calculated through the slicing areas and the adjacent slicing gap.Thus,the total volume of the scanned spatial object can be calculated by summing up the individual volumes.According to the results and analysis of the calculated examples,the slice-based volume-calculating method for the point cloud of irregular objects obtained through 3DLS is correct,concise in process,reliable in results,efficient in calculation methods,and controllable on accuracy.This method comes as a good solution to the volume calculation of irregular objects.展开更多
采用三维激光扫描技术可有效地提高钦江双线特大桥的健康监测效率。利用Trimble Business Center软件对扫描的点云数据进行配准和去噪,并利用点云切片技术获取桥梁吊索的坐标信息和线形,从而实现对钦江双线特大桥的精确监测。研究结果显...采用三维激光扫描技术可有效地提高钦江双线特大桥的健康监测效率。利用Trimble Business Center软件对扫描的点云数据进行配准和去噪,并利用点云切片技术获取桥梁吊索的坐标信息和线形,从而实现对钦江双线特大桥的精确监测。研究结果显示,三维激光扫描技术具有快速、高效、可视化的特点,拓展了桥梁监测数据的表达形式,为相关研究提供了重要的参考依据。展开更多
文摘Volume parameter is the basic content of a spatial body object morphology analysis.However,the challenge lies in the volume calculation of irregular objects.The point cloud slicing method proposed in this study effectively works in calculating the volume of the point cloud of the spatial object obtained through three-dimensional laser scanning(3DLS).In this method,a uniformly spaced sequent slicing process is first conducted in a specific direction on the point cloud of the spatial object obtained through 3DLS.A series of discrete point cloud slices corresponding to the point cloud bodies are then obtained.Subsequently,the outline boundary polygon of the point cloud slicing is searched one by one in accordance with the slicing sequence and areas of the polygon.The point cloud slice is also calculated.Finally,the individual point cloud section volume is calculated through the slicing areas and the adjacent slicing gap.Thus,the total volume of the scanned spatial object can be calculated by summing up the individual volumes.According to the results and analysis of the calculated examples,the slice-based volume-calculating method for the point cloud of irregular objects obtained through 3DLS is correct,concise in process,reliable in results,efficient in calculation methods,and controllable on accuracy.This method comes as a good solution to the volume calculation of irregular objects.
文摘采用三维激光扫描技术可有效地提高钦江双线特大桥的健康监测效率。利用Trimble Business Center软件对扫描的点云数据进行配准和去噪,并利用点云切片技术获取桥梁吊索的坐标信息和线形,从而实现对钦江双线特大桥的精确监测。研究结果显示,三维激光扫描技术具有快速、高效、可视化的特点,拓展了桥梁监测数据的表达形式,为相关研究提供了重要的参考依据。
