三维激光扫描技术在大型舱容测量中的应用研究

大型舱容标定对于不同货物密度、船体强度和倾斜度等配载情况下的容积修正和及时的容积表更新都具有重要意义。为实现大型复杂船舱的精确、快速容积标定，利用三维激光扫描技术获取船舱内外完整的点云数据，经过点云配准、点云滤波、点云空洞修补等预处理后，对点云进行自动、半自动分割，再利用NURBS曲面重建方法构造出完整的船舱整体结构三维模型。设计出一套船舱构件模型库和基于NURBS曲面的曲面求交、曲面三角剖分和容积计算方法，并利用ObjectARX开发出一套基于AutoCAD平台的船舱模型重建和容积计算系统。提出的方法和系统在实船实验中的结果表明，数据处理效率高，相对误差小于0．2％。

The Research on Calibration of Tank Capacity Using 3D Laser Scanning

The calibration of large cabin volume is significant to the volume amendment and timely update of the volume table for different loading cases such as cargo density,hull strength and tilt.In order to accomplish accurate and rapid calibration,terrestrial 3D laser scanning was used in this paper to acquire complete point cloud of the cabin inside and outside.After registration,filtering,resample and empty patching,automatical and semi -automatical segmentation were performed.3D model of the overall structure ...