摘要
LAS格式为LiDAR数据的标准交换格式。本文针对新型省级基础测绘所采用数据源新的特点,对在基础测绘中逐渐兴起的机载雷达数据进行介绍。并结合LAS数据格式的发展历程,对各个版本LAS数据格式的特点和变化进行了分析和比较,详细介绍了公共文件头区、变长记录区和点集记录区。进一步利用C#语言完成了对LAS格式数据的读取、修改等操作,实现了对点云数据检查和编辑,为后续的点云数据处理奠定了基础。
LAS format is the standard exchange format of LiDAR data. The airborne LiDAR data are analyzed in detail for the data source used in the new type of basic surveying and mapping institute. This paper introduces the development of LAS data format,and the similarities and differences between different versions of LAS format. The header area,variable length recording area and point set recording area of public documents are introduced in detail. Using C# language to read and modify LAS format data lays a foundation for subsequent point cloud data processing.
作者
马礼
薛映俊
张婧怡
MA Li;XUE Yingjun;ZHANG Jingyi(School of Information Engineering,China University of Geosciences(Beijing),Beijing 430074,China;Heilongjiang Institute of Geomatics Engineering,Harbin 150081,China)
出处
《测绘与空间地理信息》
2020年第3期61-63,72,共4页
Geomatics & Spatial Information Technology
基金
国家重点研发计划项目(2016YFB0501401)资助。
