摘要
三维激光扫描获得的点云数据,其数据量比较大,通过分析三维激光扫描数据的特点,本文提出了两个数据压缩方法,分别为区域重心数据压缩法和基于三维TIN数据的共顶点数据压缩法,介绍了两种数据压缩方法的原理和实现过程,并对区域重心数据压缩法进行实例分析,得出了压缩结果。
Spatial 3D point cloud can be quickly captured on object surface by laser scanning; however its data volume is huge. Through the analysis of features of 3D laser scanning data, this paper advances two methods of data compression, baryeenter of area data compression method and common vertex data compression method based on 3D triangulated irregular network. It introduces the principle and the process of the two data compression methods, and the compression results are obtained.
出处
《测绘科学》
CSCD
北大核心
2009年第2期142-144,共3页
Science of Surveying and Mapping
关键词
数据压缩
区域重心
共顶点
data compression
baryeenter of area
common vertex
