基于不同拼接方式的三维点云拼接精度对比  

Accuracy comparison of 3D point cloud mosaic based on different mosaic

作　　者：马勇 韩超斌[1] 石林峰 Ma Yong;Han Chaobin;Shi Linteng(The Frist Geodetic Surveying Brigade of NASG,Xi＇ an 710054,China)

机构地区：[1]国家测绘地理信息局第一大地测量队,陕西西安710054

出　　处：《矿山测量》2018年第2期100-103,共4页Mine Surveying

摘　　要：三维激光扫描仪能快速、大量的获取点云数据,完成实景复制。但通常需要多测站扫描才能完成外业数据采集,内业数据处理还需完成点云的拼接,将所有数据转换到同一个坐标系下。点云拼接主要是基于靶球或者同名点进行,针对同名点的点云拼接方式,同名点识别影响因素较多的问题,因此提出基于灰度图的拼接方式。实验对两种拼接方式进行对比,计算拼接精度,得出灰度图拼接精度明显优于点云控制点的拼接。灰度图拼接数据精度高,能够满足隧道测量的基本要求。3D laser scanner could quickly and extensively acquire point cloud data to complete the real scene replication. However,it usually required a multi-station scan to complete the data collection of the foreign industry.The data processing of the internal industry need to complete the stitching of the point cloud and all data was transferred to the same coordinate system. Point cloud splicing was mainly based on the target or the same point,in view of the corresponding point of the point cloud splicing way,same place to identify factors influencing more problems,therefore stitching method was put forward based on gray image. In the paper,two kinds of the splicing methods were compared to calculate the stitching precision,and the splicing accuracy of grayscale graph was obviously better than the splicing of point cloud selection control points. The gray-scale Mosaic data was the high accuracy and could meet the basic requirements of tunnel measurement.

关 键 词：点云 拼接精度 三维激光扫描仪 同名点 坐标转换 

分 类 号：TD172[矿业工程—矿山地质测量]