车载激光点云海量数据的管理与快速显示

Car laser point clouds of data management and rapid display

就提高车载三维信息采集与获取系统中海量点云数据的管理与显示问题,提出了一种数据访问效率的优化方案。该方案采用磁盘映射方式读取数据并引入分块索引的方法进而在VC++环境下成功编写调度模块,可为三维数据的显示过程点云数据管理软件调用。将所有的点云数据分块,通过块号查找,快速提高点云数据的查找速度,为结合OpenGL函数库以实现数据的显示提供基础,其算法思路简单且耗时少。

This paper on the three-dimensional information collection system and access to massive cloud of data management and display issue,proposed a data access optimize the efficiency of the programme.The programme used the disk to read data and mapping ways to introduce the method of indexing block further in VC + + environment prepared by the success of scheduling module,for the three-dimensional data show that the process point cloud data management software called.Find through All the point cloud data block,to rapidly improve the point cloud data,for the combination of OpenGL functions in order to achieve the data shows which provide the basis,the algorithm idea is simple and less time-consuming.